nntp.c File Reference

Usenet network mailbox type; talk to an NNTP server. More...

#include "config.h"
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <time.h>
#include <unistd.h>
#include "private.h"
#include "mutt/lib.h"
#include "config/lib.h"
#include "email/lib.h"
#include "core/lib.h"
#include "conn/lib.h"
#include "lib.h"
#include "attach/lib.h"
#include "bcache/lib.h"
#include "hcache/lib.h"
#include "ncrypt/lib.h"
#include "progress/lib.h"
#include "question/lib.h"
#include "adata.h"
#include "edata.h"
#include "hook.h"
#include "mdata.h"
#include "mutt_logging.h"
#include "muttlib.h"
#include "mx.h"
#include "protos.h"
#include "mutt.h"

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Go to the source code of this file.

Data Structures
struct	FetchCtx
	Keep track when getting data from a server. More...
struct	ChildCtx
	Keep track of the children of an article. More...

Functions
void	nntp_hashelem_free (int type, void *obj, intptr_t data)
	Free our hash table data - Implements hash_hdata_free_t -.
static int	nntp_connect_error (struct NntpAccountData *adata)
	Signal a failed connection.
static int	nntp_capabilities (struct NntpAccountData *adata)
	Get capabilities.
static int	nntp_attempt_features (struct NntpAccountData *adata)
	Detect supported commands.
static int	nntp_auth (struct NntpAccountData *adata)
	Get login, password and authenticate.
static int	nntp_query (struct NntpMboxData *mdata, char *line, size_t linelen)
	Send data from buffer and receive answer to same buffer.
static int	nntp_fetch_lines (struct NntpMboxData *mdata, char *query, size_t qlen, const char *msg, int(*func)(char *, void *), void *data)
	Read lines, calling a callback function for each.
static int	fetch_description (char *line, void *data)
	Parse newsgroup description.
static int	get_description (struct NntpMboxData *mdata, const char *wildmat, const char *msg)
	Fetch newsgroups descriptions.
static void	nntp_parse_xref (struct Mailbox *m, struct Email *e)
	Parse cross-reference.
static int	fetch_tempfile (char *line, void *data)
	Write line to temporary file.
static int	fetch_numbers (char *line, void *data)
	Parse article number.
static int	parse_overview_line (char *line, void *data)
	Parse overview line.
static int	nntp_fetch_headers (struct Mailbox *m, void *hc, anum_t first, anum_t last, bool restore)
	Fetch headers.
static int	nntp_group_poll (struct NntpMboxData *mdata, bool update_stat)
	Check newsgroup for new articles.
static enum MxStatus	check_mailbox (struct Mailbox *m)
	Check current newsgroup for new articles.
static int	nntp_date (struct NntpAccountData *adata, time_t *now)
	Get date and time from server.
static int	fetch_children (char *line, void *data)
	Parse XPAT line.
int	nntp_open_connection (struct NntpAccountData *adata)
	Connect to server, authenticate and get capabilities.
int	nntp_post (struct Mailbox *m, const char *msg)
	Post article.
int	nntp_active_fetch (struct NntpAccountData *adata, bool mark_new)
	Fetch list of all newsgroups from server.
int	nntp_check_new_groups (struct Mailbox *m, struct NntpAccountData *adata)
	Check for new groups/articles in subscribed groups.
int	nntp_check_msgid (struct Mailbox *m, const char *msgid)
	Fetch article by Message-ID.
int	nntp_check_children (struct Mailbox *m, const char *msgid)
	Fetch children of article with the Message-ID.
int	nntp_sort_unsorted (const struct Email *a, const struct Email *b, bool reverse)
	Restore the 'unsorted' order of emails - Implements sort_email_t -.
static bool	nntp_ac_owns_path (struct Account *a, const char *path)
	Check whether an Account owns a Mailbox path - Implements MxOps::ac_owns_path() -.
static bool	nntp_ac_add (struct Account *a, struct Mailbox *m)
	Add a Mailbox to an Account - Implements MxOps::ac_add() -.
static enum MxOpenReturns	nntp_mbox_open (struct Mailbox *m)
	Open a Mailbox - Implements MxOps::mbox_open() -.
static enum MxStatus	nntp_mbox_check (struct Mailbox *m)
	Check for new mail - Implements MxOps::mbox_check() -.
static enum MxStatus	nntp_mbox_sync (struct Mailbox *m)
	Save changes to the Mailbox - Implements MxOps::mbox_sync() -.
static enum MxStatus	nntp_mbox_close (struct Mailbox *m)
	Close a Mailbox - Implements MxOps::mbox_close() -.
static bool	nntp_msg_open (struct Mailbox *m, struct Message *msg, struct Email *e)
	Open an email message in a Mailbox - Implements MxOps::msg_open() -.
static int	nntp_msg_close (struct Mailbox *m, struct Message *msg)
	Close an email - Implements MxOps::msg_close() -.
enum MailboxType	nntp_path_probe (const char *path, const struct stat *st)
	Is this an NNTP Mailbox?
static int	nntp_path_canon (struct Buffer *path)
	Canonicalise a Mailbox path - Implements MxOps::path_canon() -.

Variables
struct NntpAccountData *	CurrentNewsSrv = NULL
	Current news server.
static const char *	OverviewFmt
	Fields to get from server, if it supports the LIST OVERVIEW.FMT feature.
const struct MxOps	MxNntpOps
	NNTP Mailbox - Implements MxOps -.

Detailed Description

Usenet network mailbox type; talk to an NNTP server.

Authors

• Richard Russon
• Pietro Cerutti
• Ian Zimmerman
• Dennis Schön

Copyright

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file nntp.c.

Function Documentation

nntp_connect_error()

static int nntp_connect_error ( struct NntpAccountData * adata )

static

Signal a failed connection.

Parameters

adata

NNTP server

Return values

-1

Always

Definition at line 126 of file nntp.c.

{
  adata->status = NNTP_NONE;
  mutt_error(_("Server closed connection"));
  return -1;
}

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nntp_capabilities()

static int nntp_capabilities ( struct NntpAccountData * adata )

static

Get capabilities.

Parameters

adata

NNTP server

Return values

-1	Error, connection is closed
0	Mode is reader, capabilities set up
1	Need to switch to reader mode

Definition at line 140 of file nntp.c.

{
  struct Connection *conn = adata->conn;
  bool mode_reader = false;
  char authinfo[1024] = { 0 };
 
  adata->hasCAPABILITIES = false;
  adata->hasSTARTTLS = false;
  adata->hasDATE = false;
  adata->hasLIST_NEWSGROUPS = false;
  adata->hasLISTGROUP = false;
  adata->hasLISTGROUPrange = false;
  adata->hasOVER = false;
  FREE(&adata->authenticators);
 
  struct Buffer *buf = buf_pool_get();
 
  if ((mutt_socket_send(conn, "CAPABILITIES\r\n") < 0) ||
      (mutt_socket_buffer_readln(buf, conn) < 0))
  {
    buf_pool_release(&buf);
    return nntp_connect_error(adata);
  }
 
  /* no capabilities */
  if (!mutt_str_startswith(buf_string(buf), "101"))
  {
    buf_pool_release(&buf);
    return 1;
  }
  adata->hasCAPABILITIES = true;
 
  /* parse capabilities */
  do
  {
    size_t plen = 0;
    if (mutt_socket_buffer_readln(buf, conn) < 0)
    {
      buf_pool_release(&buf);
      return nntp_connect_error(adata);
    }
    if (mutt_str_equal("STARTTLS", buf_string(buf)))
    {
      adata->hasSTARTTLS = true;
    }
    else if (mutt_str_equal("MODE-READER", buf_string(buf)))
    {
      mode_reader = true;
    }
    else if (mutt_str_equal("READER", buf_string(buf)))
    {
      adata->hasDATE = true;
      adata->hasLISTGROUP = true;
      adata->hasLISTGROUPrange = true;
    }
    else if ((plen = mutt_str_startswith(buf_string(buf), "AUTHINFO ")))
    {
      buf_addch(buf, ' ');
      mutt_str_copy(authinfo, buf->data + plen - 1, sizeof(authinfo));
    }
#ifdef USE_SASL_CYRUS
    else if ((plen = mutt_str_startswith(buf_string(buf), "SASL ")))
    {
      char *p = buf->data + plen;
      while (*p == ' ')
        p++;
      adata->authenticators = mutt_str_dup(p);
    }
#endif
    else if (mutt_str_equal("OVER", buf_string(buf)))
    {
      adata->hasOVER = true;
    }
    else if (mutt_str_startswith(buf_string(buf), "LIST "))
    {
      const char *p = buf_find_string(buf, " NEWSGROUPS");
      if (p)
      {
        p += 11;
        if ((*p == '\0') || (*p == ' '))
          adata->hasLIST_NEWSGROUPS = true;
      }
    }
  } while (!mutt_str_equal(".", buf_string(buf)));
  buf_reset(buf);
 
#ifdef USE_SASL_CYRUS
  if (adata->authenticators && mutt_istr_find(authinfo, " SASL "))
    buf_strcpy(buf, adata->authenticators);
#endif
  if (mutt_istr_find(authinfo, " USER "))
  {
    if (!buf_is_empty(buf))
      buf_addch(buf, ' ');
    buf_addstr(buf, "USER");
  }
  mutt_str_replace(&adata->authenticators, buf_string(buf));
  buf_pool_release(&buf);
 
  /* current mode is reader */
  if (adata->hasDATE)
    return 0;
 
  /* server is mode-switching, need to switch to reader mode */
  if (mode_reader)
    return 1;
 
  mutt_socket_close(conn);
  adata->status = NNTP_BYE;
  mutt_error(_("Server doesn't support reader mode"));
  return -1;
}

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nntp_attempt_features()

static int nntp_attempt_features ( struct NntpAccountData * adata )

static

Detect supported commands.

Parameters

adata

NNTP server

Return values

0	Success
-1	Failure

Definition at line 259 of file nntp.c.

{
  struct Connection *conn = adata->conn;
  char buf[1024] = { 0 };
  int rc = -1;
 
  /* no CAPABILITIES, trying DATE, LISTGROUP, LIST NEWSGROUPS */
  if (!adata->hasCAPABILITIES)
  {
    if ((mutt_socket_send(conn, "DATE\r\n") < 0) ||
        (mutt_socket_readln(buf, sizeof(buf), conn) < 0))
    {
      goto fail;
    }
    if (!mutt_str_startswith(buf, "500"))
      adata->hasDATE = true;
 
    if ((mutt_socket_send(conn, "LISTGROUP\r\n") < 0) ||
        (mutt_socket_readln(buf, sizeof(buf), conn) < 0))
    {
      goto fail;
    }
    if (!mutt_str_startswith(buf, "500"))
      adata->hasLISTGROUP = true;
 
    if ((mutt_socket_send(conn, "LIST NEWSGROUPS +\r\n") < 0) ||
        (mutt_socket_readln(buf, sizeof(buf), conn) < 0))
    {
      goto fail;
    }
    if (!mutt_str_startswith(buf, "500"))
      adata->hasLIST_NEWSGROUPS = true;
    if (mutt_str_startswith(buf, "215"))
    {
      do
      {
        if (mutt_socket_readln(buf, sizeof(buf), conn) < 0)
          goto fail;
      } while (!mutt_str_equal(".", buf));
    }
  }
 
  /* no LIST NEWSGROUPS, trying XGTITLE */
  if (!adata->hasLIST_NEWSGROUPS)
  {
    if ((mutt_socket_send(conn, "XGTITLE\r\n") < 0) ||
        (mutt_socket_readln(buf, sizeof(buf), conn) < 0))
    {
      goto fail;
    }
    if (!mutt_str_startswith(buf, "500"))
      adata->hasXGTITLE = true;
  }
 
  /* no OVER, trying XOVER */
  if (!adata->hasOVER)
  {
    if ((mutt_socket_send(conn, "XOVER\r\n") < 0) ||
        (mutt_socket_readln(buf, sizeof(buf), conn) < 0))
    {
      goto fail;
    }
    if (!mutt_str_startswith(buf, "500"))
      adata->hasXOVER = true;
  }
 
  /* trying LIST OVERVIEW.FMT */
  if (adata->hasOVER || adata->hasXOVER)
  {
    if ((mutt_socket_send(conn, "LIST OVERVIEW.FMT\r\n") < 0) ||
        (mutt_socket_readln(buf, sizeof(buf), conn) < 0))
    {
      goto fail;
    }
    if (!mutt_str_startswith(buf, "215"))
    {
      adata->overview_fmt = mutt_str_dup(OverviewFmt);
    }
    else
    {
      bool cont = false;
      size_t buflen = 2048, off = 0, b = 0;
 
      FREE(&adata->overview_fmt);
      adata->overview_fmt = MUTT_MEM_MALLOC(buflen, char);
 
      while (true)
      {
        if ((buflen - off) < 1024)
        {
          buflen *= 2;
          MUTT_MEM_REALLOC(&adata->overview_fmt, buflen, char);
        }
 
        const int chunk = mutt_socket_readln_d(adata->overview_fmt + off,
                                               buflen - off, conn, MUTT_SOCK_LOG_HDR);
        if (chunk < 0)
        {
          FREE(&adata->overview_fmt);
          goto fail;
        }
 
        if (!cont && mutt_str_equal(".", adata->overview_fmt + off))
          break;
 
        cont = (chunk >= (buflen - off));
        off += strlen(adata->overview_fmt + off);
        if (!cont)
        {
          if (adata->overview_fmt[b] == ':')
          {
            memmove(adata->overview_fmt + b, adata->overview_fmt + b + 1, off - b - 1);
            adata->overview_fmt[off - 1] = ':';
          }
          char *colon = strchr(adata->overview_fmt + b, ':');
          if (!colon)
            adata->overview_fmt[off++] = ':';
          else if (!mutt_str_equal(colon + 1, "full"))
            off = colon + 1 - adata->overview_fmt;
          if (strcasecmp(adata->overview_fmt + b, "Bytes:") == 0)
          {
            size_t len = strlen(adata->overview_fmt + b);
            mutt_str_copy(adata->overview_fmt + b, "Content-Length:", len + 1);
            off = b + len;
          }
          adata->overview_fmt[off++] = '\0';
          b = off;
        }
      }
      adata->overview_fmt[off++] = '\0';
      MUTT_MEM_REALLOC(&adata->overview_fmt, off, char);
    }
  }
  rc = 0; // Success
 
fail:
  if (rc < 0)
    nntp_connect_error(adata);
 
  return rc;
}

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nntp_auth()

static int nntp_auth ( struct NntpAccountData * adata )

static

Get login, password and authenticate.

Parameters

adata

NNTP server

Return values

0	Success
-1	Failure

Definition at line 451 of file nntp.c.

{
  struct Connection *conn = adata->conn;
  char authenticators[1024] = "USER";
  char *method = NULL, *a = NULL, *p = NULL;
  unsigned char flags = conn->account.flags;
  struct Buffer *buf = buf_pool_get();
 
  const char *const c_nntp_authenticators = cs_subset_string(NeoMutt->sub, "nntp_authenticators");
  while (true)
  {
    /* get login and password */
    if ((mutt_account_getuser(&conn->account) < 0) || (conn->account.user[0] == '\0') ||
        (mutt_account_getpass(&conn->account) < 0) || (conn->account.pass[0] == '\0'))
    {
      break;
    }
 
    /* get list of authenticators */
    if (c_nntp_authenticators)
    {
      mutt_str_copy(authenticators, c_nntp_authenticators, sizeof(authenticators));
    }
    else if (adata->hasCAPABILITIES)
    {
      mutt_str_copy(authenticators, adata->authenticators, sizeof(authenticators));
      p = authenticators;
      while (*p)
      {
        if (*p == ' ')
          *p = ':';
        p++;
      }
    }
    p = authenticators;
    while (*p)
    {
      *p = mutt_toupper(*p);
      p++;
    }
 
    mutt_debug(LL_DEBUG1, "available methods: %s\n", adata->authenticators);
    a = authenticators;
    while (true)
    {
      if (!a)
      {
        mutt_error(_("No authenticators available"));
        break;
      }
 
      method = a;
      a = strchr(a, ':');
      if (a)
        *a++ = '\0';
 
      /* check authenticator */
      if (adata->hasCAPABILITIES)
      {
        if (!adata->authenticators)
          continue;
        const char *m = mutt_istr_find(adata->authenticators, method);
        if (!m)
          continue;
        if ((m > adata->authenticators) && (*(m - 1) != ' '))
          continue;
        m += strlen(method);
        if ((*m != '\0') && (*m != ' '))
          continue;
      }
      mutt_debug(LL_DEBUG1, "trying method %s\n", method);
 
      /* AUTHINFO USER authentication */
      if (mutt_str_equal(method, "USER"))
      {
        // L10N: (%s) is the method name, e.g. Anonymous, CRAM-MD5, GSSAPI, SASL
        mutt_message(_("Authenticating (%s)..."), method);
        buf_printf(buf, "AUTHINFO USER %s\r\n", conn->account.user);
        if ((mutt_socket_send(conn, buf_string(buf)) < 0) ||
            (mutt_socket_buffer_readln_d(buf, conn, MUTT_SOCK_LOG_FULL) < 0))
        {
          break;
        }
 
        /* authenticated, password is not required */
        if (mutt_str_startswith(buf_string(buf), "281"))
        {
          buf_pool_release(&buf);
          return 0;
        }
 
        /* username accepted, sending password */
        if (mutt_str_startswith(buf_string(buf), "381"))
        {
          mutt_debug(MUTT_SOCK_LOG_FULL, "%d> AUTHINFO PASS *\n", conn->fd);
          buf_printf(buf, "AUTHINFO PASS %s\r\n", conn->account.pass);
          if ((mutt_socket_send_d(conn, buf_string(buf), MUTT_SOCK_LOG_FULL) < 0) ||
              (mutt_socket_buffer_readln_d(buf, conn, MUTT_SOCK_LOG_FULL) < 0))
          {
            break;
          }
 
          /* authenticated */
          if (mutt_str_startswith(buf_string(buf), "281"))
          {
            buf_pool_release(&buf);
            return 0;
          }
        }
 
        /* server doesn't support AUTHINFO USER, trying next method */
        if (buf_at(buf, 0) == '5')
          continue;
      }
      else
      {
#ifdef USE_SASL_CYRUS
        sasl_conn_t *saslconn = NULL;
        sasl_interact_t *interaction = NULL;
        int rc;
        char inbuf[1024] = { 0 };
        const char *mech = NULL;
        const char *client_out = NULL;
        unsigned int client_len, len;
 
        if (mutt_sasl_client_new(conn, &saslconn) < 0)
        {
          mutt_debug(LL_DEBUG1, "error allocating SASL connection\n");
          continue;
        }
 
        while (true)
        {
          rc = sasl_client_start(saslconn, method, &interaction, &client_out,
                                 &client_len, &mech);
          if (rc != SASL_INTERACT)
            break;
          mutt_sasl_interact(interaction);
        }
        if ((rc != SASL_OK) && (rc != SASL_CONTINUE))
        {
          sasl_dispose(&saslconn);
          mutt_debug(LL_DEBUG1, "error starting SASL authentication exchange\n");
          continue;
        }
 
        // L10N: (%s) is the method name, e.g. Anonymous, CRAM-MD5, GSSAPI, SASL
        mutt_message(_("Authenticating (%s)..."), method);
        buf_printf(buf, "AUTHINFO SASL %s", method);
 
        /* looping protocol */
        while ((rc == SASL_CONTINUE) || ((rc == SASL_OK) && client_len))
        {
          /* send out client response */
          if (client_len)
          {
            nntp_log_binbuf(client_out, client_len, "SASL", MUTT_SOCK_LOG_FULL);
            if (!buf_is_empty(buf))
              buf_addch(buf, ' ');
            len = buf_len(buf);
            if (sasl_encode64(client_out, client_len, buf->data + len,
                              buf->dsize - len, &len) != SASL_OK)
            {
              mutt_debug(LL_DEBUG1, "error base64-encoding client response\n");
              break;
            }
          }
 
          buf_addstr(buf, "\r\n");
          if (buf_find_char(buf, ' '))
          {
            mutt_debug(MUTT_SOCK_LOG_CMD, "%d> AUTHINFO SASL %s%s\n", conn->fd,
                       method, client_len ? " sasl_data" : "");
          }
          else
          {
            mutt_debug(MUTT_SOCK_LOG_CMD, "%d> sasl_data\n", conn->fd);
          }
          client_len = 0;
          if ((mutt_socket_send_d(conn, buf_string(buf), MUTT_SOCK_LOG_FULL) < 0) ||
              (mutt_socket_readln_d(inbuf, sizeof(inbuf), conn, MUTT_SOCK_LOG_FULL) < 0))
          {
            break;
          }
          if (!mutt_str_startswith(inbuf, "283 ") && !mutt_str_startswith(inbuf, "383 "))
          {
            mutt_debug(MUTT_SOCK_LOG_FULL, "%d< %s\n", conn->fd, inbuf);
            break;
          }
          inbuf[3] = '\0';
          mutt_debug(MUTT_SOCK_LOG_FULL, "%d< %s sasl_data\n", conn->fd, inbuf);
 
          if (mutt_str_equal("=", inbuf + 4))
            len = 0;
          else if (sasl_decode64(inbuf + 4, strlen(inbuf + 4), buf->data,
                                 buf->dsize - 1, &len) != SASL_OK)
          {
            mutt_debug(LL_DEBUG1, "error base64-decoding server response\n");
            break;
          }
          else
          {
            nntp_log_binbuf(buf_string(buf), len, "SASL", MUTT_SOCK_LOG_FULL);
          }
 
          while (true)
          {
            rc = sasl_client_step(saslconn, buf_string(buf), len, &interaction,
                                  &client_out, &client_len);
            if (rc != SASL_INTERACT)
              break;
            mutt_sasl_interact(interaction);
          }
          if (*inbuf != '3')
            break;
 
          buf_reset(buf);
        } /* looping protocol */
 
        if ((rc == SASL_OK) && (client_len == 0) && (*inbuf == '2'))
        {
          mutt_sasl_setup_conn(conn, saslconn);
          buf_pool_release(&buf);
          return 0;
        }
 
        /* terminate SASL session */
        sasl_dispose(&saslconn);
        if (conn->fd < 0)
          break;
        if (mutt_str_startswith(inbuf, "383 "))
        {
          if ((mutt_socket_send(conn, "*\r\n") < 0) ||
              (mutt_socket_readln(inbuf, sizeof(inbuf), conn) < 0))
          {
            break;
          }
        }
 
        /* server doesn't support AUTHINFO SASL, trying next method */
        if (*inbuf == '5')
          continue;
#else
        continue;
#endif /* USE_SASL_CYRUS */
      }
 
      // L10N: %s is the method name, e.g. Anonymous, CRAM-MD5, GSSAPI, SASL
      mutt_error(_("%s authentication failed"), method);
      break;
    }
    break;
  }
 
  /* error */
  adata->status = NNTP_BYE;
  conn->account.flags = flags;
  if (conn->fd < 0)
  {
    mutt_error(_("Server closed connection"));
  }
  else
  {
    mutt_socket_close(conn);
  }
 
  buf_pool_release(&buf);
  return -1;
}

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nntp_query()

static int nntp_query ( struct NntpMboxData * mdata, char * line, size_t linelen )

static

Send data from buffer and receive answer to same buffer.

Parameters

mdata	NNTP Mailbox data
line	Buffer containing data
linelen	Length of buffer

Return values

0	Success
-1	Failure

Definition at line 729 of file nntp.c.

{
  struct NntpAccountData *adata = mdata->adata;
  if (adata->status == NNTP_BYE)
    return -1;
 
  char buf[1024] = { 0 };
  int rc = -1;
 
  while (true)
  {
    if (adata->status == NNTP_OK)
    {
      int rc_send = 0;
 
      if (*line)
      {
        rc_send = mutt_socket_send(adata->conn, line);
      }
      else if (mdata->group)
      {
        snprintf(buf, sizeof(buf), "GROUP %s\r\n", mdata->group);
        rc_send = mutt_socket_send(adata->conn, buf);
      }
      if (rc_send >= 0)
        rc_send = mutt_socket_readln(buf, sizeof(buf), adata->conn);
      if (rc_send >= 0)
        break;
    }
 
    /* reconnect */
    while (true)
    {
      adata->status = NNTP_NONE;
      if (nntp_open_connection(adata) == 0)
        break;
 
      snprintf(buf, sizeof(buf), _("Connection to %s lost. Reconnect?"),
               adata->conn->account.host);
      if (query_yesorno(buf, MUTT_YES) != MUTT_YES)
      {
        adata->status = NNTP_BYE;
        goto done;
      }
    }
 
    /* select newsgroup after reconnection */
    if (mdata->group)
    {
      snprintf(buf, sizeof(buf), "GROUP %s\r\n", mdata->group);
      if ((mutt_socket_send(adata->conn, buf) < 0) ||
          (mutt_socket_readln(buf, sizeof(buf), adata->conn) < 0))
      {
        nntp_connect_error(adata);
        goto done;
      }
    }
    if (*line == '\0')
      break;
  }
 
  mutt_str_copy(line, buf, linelen);
  rc = 0;
 
done:
  return rc;
}

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nntp_fetch_lines()

static int nntp_fetch_lines ( struct NntpMboxData * mdata, char * query, size_t qlen, const char * msg, int(* func )(char *, void *), void * data )

static

Read lines, calling a callback function for each.

Parameters

mdata	NNTP Mailbox data
query	Query to match
qlen	Length of query
msg	Progress message (OPTIONAL)
func	Callback function
data	Data for callback function

Return values

0	Success
1	Bad response (answer in query buffer)
-1	Connection lost
-2	Error in func(*line, *data)

This function calls func(*line, *data) for each received line, func(NULL, *data) if rewind(*data) needs, exits when fail or done:

Definition at line 813 of file nntp.c.

{
  bool done = false;
  int rc;
 
  while (!done)
  {
    char buf[1024] = { 0 };
    char *line = NULL;
    unsigned int lines = 0;
    size_t off = 0;
    struct Progress *progress = NULL;
 
    mutt_str_copy(buf, query, sizeof(buf));
    if (nntp_query(mdata, buf, sizeof(buf)) < 0)
      return -1;
    if (buf[0] != '2')
    {
      mutt_str_copy(query, buf, qlen);
      return 1;
    }
 
    line = MUTT_MEM_MALLOC(sizeof(buf), char);
    rc = 0;
 
    if (msg)
    {
      progress = progress_new(MUTT_PROGRESS_READ, 0);
      progress_set_message(progress, "%s", msg);
    }
 
    while (true)
    {
      char *p = NULL;
      int chunk = mutt_socket_readln_d(buf, sizeof(buf), mdata->adata->conn, MUTT_SOCK_LOG_FULL);
      if (chunk < 0)
      {
        mdata->adata->status = NNTP_NONE;
        break;
      }
 
      p = buf;
      if (!off && (buf[0] == '.'))
      {
        if (buf[1] == '\0')
        {
          done = true;
          break;
        }
        if (buf[1] == '.')
          p++;
      }
 
      mutt_str_copy(line + off, p, sizeof(buf));
 
      if (chunk >= sizeof(buf))
      {
        off += strlen(p);
      }
      else
      {
        progress_update(progress, ++lines, -1);
 
        if ((rc == 0) && (func(line, data) < 0))
          rc = -2;
        off = 0;
      }
 
      MUTT_MEM_REALLOC(&line, off + sizeof(buf), char);
    }
    FREE(&line);
    func(NULL, data);
    progress_free(&progress);
  }
 
  return rc;
}

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fetch_description()

static int fetch_description ( char * line, void * data )

static

Parse newsgroup description.

Parameters

line	String to parse
data	NNTP Server

Return values

0

Always

Definition at line 898 of file nntp.c.

{
  if (!line)
    return 0;
 
  struct NntpAccountData *adata = data;
 
  char *desc = strpbrk(line, " \t");
  if (desc)
  {
    *desc++ = '\0';
    desc += strspn(desc, " \t");
  }
  else
  {
    desc = strchr(line, '\0');
  }
 
  struct NntpMboxData *mdata = mutt_hash_find(adata->groups_hash, line);
  if (mdata && !mutt_str_equal(desc, mdata->desc))
  {
    mutt_str_replace(&mdata->desc, desc);
    mutt_debug(LL_DEBUG2, "group: %s, desc: %s\n", line, desc);
  }
  return 0;
}

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get_description()

static int get_description ( struct NntpMboxData * mdata, const char * wildmat, const char * msg )

static

Fetch newsgroups descriptions.

Parameters

mdata	NNTP Mailbox data
wildmat	String to match
msg	Progress message

Return values

0	Success
1	Bad response (answer in query buffer)
-1	Connection lost
-2	Error

Definition at line 935 of file nntp.c.

{
  char buf[256] = { 0 };
  const char *cmd = NULL;
 
  /* get newsgroup description, if possible */
  struct NntpAccountData *adata = mdata->adata;
  if (!wildmat)
    wildmat = mdata->group;
  if (adata->hasLIST_NEWSGROUPS)
    cmd = "LIST NEWSGROUPS";
  else if (adata->hasXGTITLE)
    cmd = "XGTITLE";
  else
    return 0;
 
  snprintf(buf, sizeof(buf), "%s %s\r\n", cmd, wildmat);
  int rc = nntp_fetch_lines(mdata, buf, sizeof(buf), msg, fetch_description, adata);
  if (rc > 0)
  {
    mutt_error("%s: %s", cmd, buf);
  }
  return rc;
}

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nntp_parse_xref()

static void nntp_parse_xref ( struct Mailbox * m, struct Email * e )

static

Parse cross-reference.

Parameters

m	Mailbox
e	Email

Update read flag and set article number if empty

Definition at line 967 of file nntp.c.

{
  struct NntpMboxData *mdata = m->mdata;
 
  char *buf = mutt_str_dup(e->env->xref);
  char *p = buf;
  while (p)
  {
    anum_t anum = 0;
 
    /* skip to next word */
    p += strspn(p, " \t");
    char *grp = p;
 
    /* skip to end of word */
    p = strpbrk(p, " \t");
    if (p)
      *p++ = '\0';
 
    /* find colon */
    char *colon = strchr(grp, ':');
    if (!colon)
      continue;
    *colon++ = '\0';
    if (sscanf(colon, ANUM_FMT, &anum) != 1)
      continue;
 
    nntp_article_status(m, e, grp, anum);
    if (!nntp_edata_get(e)->article_num && mutt_str_equal(mdata->group, grp))
      nntp_edata_get(e)->article_num = anum;
  }
  FREE(&buf);
}

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fetch_tempfile()

static int fetch_tempfile ( char * line, void * data )

static

Write line to temporary file.

Parameters

line	Text to write
data	FILE pointer

Return values

0	Success
-1	Failure

Definition at line 1008 of file nntp.c.

{
  FILE *fp = data;
 
  if (!line)
    rewind(fp);
  else if ((fputs(line, fp) == EOF) || (fputc('\n', fp) == EOF))
    return -1;
  return 0;
}

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fetch_numbers()

static int fetch_numbers ( char * line, void * data )

static

Parse article number.

Parameters

line	Article number
data	FetchCtx

Return values

0

Always

Definition at line 1025 of file nntp.c.

{
  struct FetchCtx *fc = data;
  anum_t anum = 0;
 
  if (!line)
    return 0;
  if (sscanf(line, ANUM_FMT, &anum) != 1)
    return 0;
  if ((anum < fc->first) || (anum > fc->last))
    return 0;
  fc->messages[anum - fc->first] = 1;
  return 0;
}

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parse_overview_line()

static int parse_overview_line ( char * line, void * data )

static

Parse overview line.

Parameters

line	String to parse
data	FetchCtx

Return values

0	Success
-1	Failure

Definition at line 1047 of file nntp.c.

{
  if (!line || !data)
    return 0;
 
  struct FetchCtx *fc = data;
  struct Mailbox *m = fc->mailbox;
  if (!m)
    return -1;
 
  struct NntpMboxData *mdata = m->mdata;
  struct Email *e = NULL;
  char *header = NULL, *field = NULL;
  bool save = true;
  anum_t anum = 0;
 
  /* parse article number */
  field = strchr(line, '\t');
  if (field)
    *field++ = '\0';
  if (sscanf(line, ANUM_FMT, &anum) != 1)
    return 0;
  mutt_debug(LL_DEBUG2, "" ANUM_FMT "\n", anum);
 
  /* out of bounds */
  if ((anum < fc->first) || (anum > fc->last))
    return 0;
 
  /* not in LISTGROUP */
  if (!fc->messages[anum - fc->first])
  {
    progress_update(fc->progress, anum - fc->first + 1, -1);
    return 0;
  }
 
  /* convert overview line to header */
  FILE *fp = mutt_file_mkstemp();
  if (!fp)
    return -1;
 
  header = mdata->adata->overview_fmt;
  while (field)
  {
    char *b = field;
 
    if (*header)
    {
      if (!strstr(header, ":full") && (fputs(header, fp) == EOF))
      {
        mutt_file_fclose(&fp);
        return -1;
      }
      header = strchr(header, '\0') + 1;
    }
 
    field = strchr(field, '\t');
    if (field)
      *field++ = '\0';
    if ((fputs(b, fp) == EOF) || (fputc('\n', fp) == EOF))
    {
      mutt_file_fclose(&fp);
      return -1;
    }
  }
  rewind(fp);
 
  /* allocate memory for headers */
  mx_alloc_memory(m, m->msg_count);
 
  /* parse header */
  m->emails[m->msg_count] = email_new();
  e = m->emails[m->msg_count];
  e->env = mutt_rfc822_read_header(fp, e, false, false);
  e->env->newsgroups = mutt_str_dup(mdata->group);
  e->received = e->date_sent;
  mutt_file_fclose(&fp);
 
#ifdef USE_HCACHE
  if (fc->hc)
  {
    char buf[16] = { 0 };
 
    /* try to replace with header from cache */
    snprintf(buf, sizeof(buf), ANUM_FMT, anum);
    struct HCacheEntry hce = hcache_fetch_email(fc->hc, buf, strlen(buf), 0);
    if (hce.email)
    {
      mutt_debug(LL_DEBUG2, "hcache_fetch_email %s\n", buf);
      email_free(&e);
      e = hce.email;
      m->emails[m->msg_count] = e;
      e->edata = NULL;
      e->read = false;
      e->old = false;
 
      /* skip header marked as deleted in cache */
      if (e->deleted && !fc->restore)
      {
        if (mdata->bcache)
        {
          mutt_debug(LL_DEBUG2, "mutt_bcache_del %s\n", buf);
          mutt_bcache_del(mdata->bcache, buf);
        }
        save = false;
      }
    }
    else
    {
      /* not cached yet, store header */
      mutt_debug(LL_DEBUG2, "hcache_store_email %s\n", buf);
      hcache_store_email(fc->hc, buf, strlen(buf), e, 0);
    }
  }
#endif
 
  if (save)
  {
    e->index = m->msg_count++;
    e->read = false;
    e->old = false;
    e->deleted = false;
    e->edata = nntp_edata_new();
    e->edata_free = nntp_edata_free;
    nntp_edata_get(e)->article_num = anum;
    if (fc->restore)
    {
      e->changed = true;
    }
    else
    {
      nntp_article_status(m, e, NULL, anum);
      if (!e->read)
        nntp_parse_xref(m, e);
    }
    if (anum > mdata->last_loaded)
      mdata->last_loaded = anum;
  }
  else
  {
    email_free(&e);
  }
 
  progress_update(fc->progress, anum - fc->first + 1, -1);
  return 0;
}

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nntp_fetch_headers()

static int nntp_fetch_headers ( struct Mailbox * m, void * hc, anum_t first, anum_t last, bool restore )

static

Fetch headers.

Parameters

m	Mailbox
hc	Header cache
first	Number of first header to fetch
last	Number of last header to fetch
restore	Restore message listed as deleted

Return values

0	Success
-1	Failure

Definition at line 1203 of file nntp.c.

{
  if (!m)
    return -1;
 
  struct NntpMboxData *mdata = m->mdata;
  struct FetchCtx fc = { 0 };
  struct Email *e = NULL;
  char buf[8192] = { 0 };
  int rc = 0;
  anum_t current;
  anum_t first_over = first;
 
  /* if empty group or nothing to do */
  if (!last || (first > last))
    return 0;
 
  /* init fetch context */
  fc.mailbox = m;
  fc.first = first;
  fc.last = last;
  fc.restore = restore;
  fc.messages = MUTT_MEM_CALLOC(last - first + 1, unsigned char);
  if (!fc.messages)
    return -1;
  fc.hc = hc;
 
  /* fetch list of articles */
  const bool c_nntp_listgroup = cs_subset_bool(NeoMutt->sub, "nntp_listgroup");
  if (c_nntp_listgroup && mdata->adata->hasLISTGROUP && !mdata->deleted)
  {
    if (m->verbose)
      mutt_message(_("Fetching list of articles..."));
    if (mdata->adata->hasLISTGROUPrange)
    {
      snprintf(buf, sizeof(buf), "LISTGROUP %s " ANUM_FMT "-" ANUM_FMT "\r\n",
               mdata->group, first, last);
    }
    else
    {
      snprintf(buf, sizeof(buf), "LISTGROUP %s\r\n", mdata->group);
    }
    rc = nntp_fetch_lines(mdata, buf, sizeof(buf), NULL, fetch_numbers, &fc);
    if (rc > 0)
    {
      mutt_error("LISTGROUP: %s", buf);
    }
    if (rc == 0)
    {
      for (current = first; (current <= last); current++)
      {
        if (fc.messages[current - first])
          continue;
 
        snprintf(buf, sizeof(buf), ANUM_FMT, current);
        if (mdata->bcache)
        {
          mutt_debug(LL_DEBUG2, "#1 mutt_bcache_del %s\n", buf);
          mutt_bcache_del(mdata->bcache, buf);
        }
 
#ifdef USE_HCACHE
        if (fc.hc)
        {
          mutt_debug(LL_DEBUG2, "hcache_delete_email %s\n", buf);
          hcache_delete_email(fc.hc, buf, strlen(buf));
        }
#endif
      }
    }
  }
  else
  {
    for (current = first; current <= last; current++)
      fc.messages[current - first] = 1;
  }
 
  /* fetching header from cache or server, or fallback to fetch overview */
  if (m->verbose)
  {
    fc.progress = progress_new(MUTT_PROGRESS_READ, last - first + 1);
    progress_set_message(fc.progress, _("Fetching message headers..."));
  }
  for (current = first; (current <= last) && (rc == 0); current++)
  {
    progress_update(fc.progress, current - first + 1, -1);
 
#ifdef USE_HCACHE
    snprintf(buf, sizeof(buf), ANUM_FMT, current);
#endif
 
    /* delete header from cache that does not exist on server */
    if (!fc.messages[current - first])
      continue;
 
    /* allocate memory for headers */
    mx_alloc_memory(m, m->msg_count);
 
#ifdef USE_HCACHE
    /* try to fetch header from cache */
    struct HCacheEntry hce = hcache_fetch_email(fc.hc, buf, strlen(buf), 0);
    if (hce.email)
    {
      mutt_debug(LL_DEBUG2, "hcache_fetch_email %s\n", buf);
      e = hce.email;
      m->emails[m->msg_count] = e;
      e->edata = NULL;
 
      /* skip header marked as deleted in cache */
      if (e->deleted && !restore)
      {
        email_free(&e);
        if (mdata->bcache)
        {
          mutt_debug(LL_DEBUG2, "#2 mutt_bcache_del %s\n", buf);
          mutt_bcache_del(mdata->bcache, buf);
        }
        continue;
      }
 
      e->read = false;
      e->old = false;
    }
    else
#endif
        if (mdata->deleted)
    {
      /* don't try to fetch header from removed newsgroup */
      continue;
    }
    else if (mdata->adata->hasOVER || mdata->adata->hasXOVER)
    {
      /* fallback to fetch overview */
      if (c_nntp_listgroup && mdata->adata->hasLISTGROUP)
        break;
      else
        continue;
    }
    else
    {
      /* fetch header from server */
      FILE *fp = mutt_file_mkstemp();
      if (!fp)
      {
        mutt_perror(_("Can't create temporary file"));
        rc = -1;
        break;
      }
 
      snprintf(buf, sizeof(buf), "HEAD " ANUM_FMT "\r\n", current);
      rc = nntp_fetch_lines(mdata, buf, sizeof(buf), NULL, fetch_tempfile, fp);
      if (rc)
      {
        mutt_file_fclose(&fp);
        if (rc < 0)
          break;
 
        /* invalid response */
        if (!mutt_str_startswith(buf, "423"))
        {
          mutt_error("HEAD: %s", buf);
          break;
        }
 
        /* no such article */
        if (mdata->bcache)
        {
          snprintf(buf, sizeof(buf), ANUM_FMT, current);
          mutt_debug(LL_DEBUG2, "#3 mutt_bcache_del %s\n", buf);
          mutt_bcache_del(mdata->bcache, buf);
        }
        rc = 0;
        continue;
      }
 
      /* parse header */
      m->emails[m->msg_count] = email_new();
      e = m->emails[m->msg_count];
      e->env = mutt_rfc822_read_header(fp, e, false, false);
      e->received = e->date_sent;
      mutt_file_fclose(&fp);
    }
 
    /* save header in context */
    e->index = m->msg_count++;
    e->read = false;
    e->old = false;
    e->deleted = false;
    e->edata = nntp_edata_new();
    e->edata_free = nntp_edata_free;
    nntp_edata_get(e)->article_num = current;
    if (restore)
    {
      e->changed = true;
    }
    else
    {
      nntp_article_status(m, e, NULL, nntp_edata_get(e)->article_num);
      if (!e->read)
        nntp_parse_xref(m, e);
    }
    if (current > mdata->last_loaded)
      mdata->last_loaded = current;
    first_over = current + 1;
  }
 
  if (!c_nntp_listgroup || !mdata->adata->hasLISTGROUP)
    current = first_over;
 
  /* fetch overview information */
  if ((current <= last) && (rc == 0) && !mdata->deleted)
  {
    char *cmd = mdata->adata->hasOVER ? "OVER" : "XOVER";
    snprintf(buf, sizeof(buf), "%s " ANUM_FMT "-" ANUM_FMT "\r\n", cmd, current, last);
    rc = nntp_fetch_lines(mdata, buf, sizeof(buf), NULL, parse_overview_line, &fc);
    if (rc > 0)
    {
      mutt_error("%s: %s", cmd, buf);
    }
  }
 
  FREE(&fc.messages);
  progress_free(&fc.progress);
  if (rc != 0)
    return -1;
  mutt_clear_error();
  return 0;
}

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nntp_group_poll()

static int nntp_group_poll ( struct NntpMboxData * mdata, bool update_stat )

static

Check newsgroup for new articles.

Parameters

mdata	NNTP Mailbox data
update_stat	Update the stats?

Return values

1	New articles found
0	No change
-1	Lost connection

Definition at line 1440 of file nntp.c.

{
  char buf[1024] = { 0 };
  anum_t count = 0, first = 0, last = 0;
 
  /* use GROUP command to poll newsgroup */
  if (nntp_query(mdata, buf, sizeof(buf)) < 0)
    return -1;
  if (sscanf(buf, "211 " ANUM_FMT " " ANUM_FMT " " ANUM_FMT, &count, &first, &last) != 3)
    return 0;
  if ((first == mdata->first_message) && (last == mdata->last_message))
    return 0;
 
  /* articles have been renumbered */
  if (last < mdata->last_message)
  {
    mdata->last_cached = 0;
    if (mdata->newsrc_len)
    {
      MUTT_MEM_REALLOC(&mdata->newsrc_ent, 1, struct NewsrcEntry);
      mdata->newsrc_len = 1;
      mdata->newsrc_ent[0].first = 1;
      mdata->newsrc_ent[0].last = 0;
    }
  }
  mdata->first_message = first;
  mdata->last_message = last;
  if (!update_stat)
  {
    return 1;
  }
  else if (!last || (!mdata->newsrc_ent && !mdata->last_cached))
  {
    /* update counters */
    mdata->unread = count;
  }
  else
  {
    nntp_group_unread_stat(mdata);
  }
  return 1;
}

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check_mailbox()

static enum MxStatus check_mailbox ( struct Mailbox * m )

static

Check current newsgroup for new articles.

Parameters

m

Mailbox

Return values

enum

MxStatus

Leave newsrc locked

Definition at line 1490 of file nntp.c.

{
  if (!m || !m->mdata)
    return MX_STATUS_ERROR;
 
  struct NntpMboxData *mdata = m->mdata;
  struct NntpAccountData *adata = mdata->adata;
  time_t now = mutt_date_now();
  enum MxStatus rc = MX_STATUS_OK;
  struct HeaderCache *hc = NULL;
 
  const short c_nntp_poll = cs_subset_number(NeoMutt->sub, "nntp_poll");
  if (adata->check_time + c_nntp_poll > now)
    return MX_STATUS_OK;
 
  mutt_message(_("Checking for new messages..."));
  if (nntp_newsrc_parse(adata) < 0)
    return MX_STATUS_ERROR;
 
  adata->check_time = now;
  int rc2 = nntp_group_poll(mdata, false);
  if (rc2 < 0)
  {
    nntp_newsrc_close(adata);
    return -1;
  }
  if (rc2 != 0)
    nntp_active_save_cache(adata);
 
  /* articles have been renumbered, remove all emails */
  if (mdata->last_message < mdata->last_loaded)
  {
    for (int i = 0; i < m->msg_count; i++)
      email_free(&m->emails[i]);
    m->msg_count = 0;
    m->msg_tagged = 0;
 
    mdata->last_loaded = mdata->first_message - 1;
    const long c_nntp_context = cs_subset_long(NeoMutt->sub, "nntp_context");
    if (c_nntp_context && (mdata->last_message - mdata->last_loaded > c_nntp_context))
      mdata->last_loaded = mdata->last_message - c_nntp_context;
 
    rc = MX_STATUS_REOPENED;
  }
 
  /* .newsrc has been externally modified */
  if (adata->newsrc_modified)
  {
#ifdef USE_HCACHE
    unsigned char *messages = NULL;
    char buf[16] = { 0 };
    struct Email *e = NULL;
    anum_t first = mdata->first_message;
 
    const long c_nntp_context = cs_subset_long(NeoMutt->sub, "nntp_context");
    if (c_nntp_context && ((mdata->last_message - first + 1) > c_nntp_context))
      first = mdata->last_message - c_nntp_context + 1;
    messages = MUTT_MEM_CALLOC(mdata->last_loaded - first + 1, unsigned char);
    hc = nntp_hcache_open(mdata);
    nntp_hcache_update(mdata, hc);
#endif
 
    /* update flags according to .newsrc */
    int j = 0;
    for (int i = 0; i < m->msg_count; i++)
    {
      if (!m->emails[i])
        continue;
      bool flagged = false;
      anum_t anum = nntp_edata_get(m->emails[i])->article_num;
 
#ifdef USE_HCACHE
      /* check hcache for flagged and deleted flags */
      if (hc)
      {
        if ((anum >= first) && (anum <= mdata->last_loaded))
          messages[anum - first] = 1;
 
        snprintf(buf, sizeof(buf), ANUM_FMT, anum);
        struct HCacheEntry hce = hcache_fetch_email(hc, buf, strlen(buf), 0);
        if (hce.email)
        {
          bool deleted;
 
          mutt_debug(LL_DEBUG2, "#1 hcache_fetch_email %s\n", buf);
          e = hce.email;
          e->edata = NULL;
          deleted = e->deleted;
          flagged = e->flagged;
          email_free(&e);
 
          /* header marked as deleted, removing from context */
          if (deleted)
          {
            mutt_set_flag(m, m->emails[i], MUTT_TAG, false, true);
            email_free(&m->emails[i]);
            continue;
          }
        }
      }
#endif
 
      if (!m->emails[i]->changed)
      {
        m->emails[i]->flagged = flagged;
        m->emails[i]->read = false;
        m->emails[i]->old = false;
        nntp_article_status(m, m->emails[i], NULL, anum);
        if (!m->emails[i]->read)
          nntp_parse_xref(m, m->emails[i]);
      }
      m->emails[j++] = m->emails[i];
    }
 
#ifdef USE_HCACHE
    m->msg_count = j;
 
    /* restore headers without "deleted" flag */
    for (anum_t anum = first; anum <= mdata->last_loaded; anum++)
    {
      if (messages[anum - first])
        continue;
 
      snprintf(buf, sizeof(buf), ANUM_FMT, anum);
      struct HCacheEntry hce = hcache_fetch_email(hc, buf, strlen(buf), 0);
      if (hce.email)
      {
        mutt_debug(LL_DEBUG2, "#2 hcache_fetch_email %s\n", buf);
        mx_alloc_memory(m, m->msg_count);
 
        e = hce.email;
        m->emails[m->msg_count] = e;
        e->edata = NULL;
        if (e->deleted)
        {
          email_free(&e);
          if (mdata->bcache)
          {
            mutt_debug(LL_DEBUG2, "mutt_bcache_del %s\n", buf);
            mutt_bcache_del(mdata->bcache, buf);
          }
          continue;
        }
 
        m->msg_count++;
        e->read = false;
        e->old = false;
        e->edata = nntp_edata_new();
        e->edata_free = nntp_edata_free;
        nntp_edata_get(e)->article_num = anum;
        nntp_article_status(m, e, NULL, anum);
        if (!e->read)
          nntp_parse_xref(m, e);
      }
    }
    FREE(&messages);
#endif
 
    adata->newsrc_modified = false;
    rc = MX_STATUS_REOPENED;
  }
 
  /* some emails were removed, mailboxview must be updated */
  if (rc == MX_STATUS_REOPENED)
    mailbox_changed(m, NT_MAILBOX_INVALID);
 
  /* fetch headers of new articles */
  if (mdata->last_message > mdata->last_loaded)
  {
    int oldmsgcount = m->msg_count;
    bool verbose = m->verbose;
    m->verbose = false;
#ifdef USE_HCACHE
    if (!hc)
    {
      hc = nntp_hcache_open(mdata);
      nntp_hcache_update(mdata, hc);
    }
#endif
    int old_msg_count = m->msg_count;
    rc2 = nntp_fetch_headers(m, hc, mdata->last_loaded + 1, mdata->last_message, false);
    m->verbose = verbose;
    if (rc2 == 0)
    {
      if (m->msg_count > old_msg_count)
        mailbox_changed(m, NT_MAILBOX_INVALID);
      mdata->last_loaded = mdata->last_message;
    }
    if ((rc == MX_STATUS_OK) && (m->msg_count > oldmsgcount))
      rc = MX_STATUS_NEW_MAIL;
  }
 
#ifdef USE_HCACHE
  hcache_close(&hc);
#endif
  if (rc != MX_STATUS_OK)
    nntp_newsrc_close(adata);
  mutt_clear_error();
  return rc;
}

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nntp_date()

static int nntp_date ( struct NntpAccountData * adata, time_t * now )

static

Get date and time from server.

Parameters

adata	NNTP server
now	Server time

Return values

0	Success
-1	Failure

Definition at line 1698 of file nntp.c.

{
  if (adata->hasDATE)
  {
    struct NntpMboxData mdata = { 0 };
    char buf[1024] = { 0 };
    struct tm tm = { 0 };
 
    mdata.adata = adata;
    mdata.group = NULL;
    mutt_str_copy(buf, "DATE\r\n", sizeof(buf));
    if (nntp_query(&mdata, buf, sizeof(buf)) < 0)
      return -1;
 
    if (sscanf(buf, "111 %4d%2d%2d%2d%2d%2d%*s", &tm.tm_year, &tm.tm_mon,
               &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) == 6)
    {
      tm.tm_year -= 1900;
      tm.tm_mon--;
      *now = timegm(&tm);
      if (*now >= 0)
      {
        mutt_debug(LL_DEBUG1, "server time is %llu\n", (unsigned long long) *now);
        return 0;
      }
    }
  }
  *now = mutt_date_now();
  return 0;
}

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fetch_children()

static int fetch_children ( char * line, void * data )

static

Parse XPAT line.

Parameters

line	String to parse
data	ChildCtx

Return values

0

Always

Definition at line 1735 of file nntp.c.

{
  struct ChildCtx *cc = data;
  anum_t anum = 0;
 
  if (!line || (sscanf(line, ANUM_FMT, &anum) != 1))
    return 0;
  for (unsigned int i = 0; i < cc->mailbox->msg_count; i++)
  {
    struct Email *e = cc->mailbox->emails[i];
    if (!e)
      break;
    if (nntp_edata_get(e)->article_num == anum)
      return 0;
  }
  if (cc->num >= cc->max)
  {
    cc->max *= 2;
    MUTT_MEM_REALLOC(&cc->child, cc->max, anum_t);
  }
  cc->child[cc->num++] = anum;
  return 0;
}

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nntp_open_connection()

int nntp_open_connection

(

struct NntpAccountData *

adata

)

Connect to server, authenticate and get capabilities.

Parameters

adata

NNTP server

Return values

0	Success
-1	Failure

Definition at line 1765 of file nntp.c.

{
  if (adata->status == NNTP_OK)
    return 0;
  if (adata->status == NNTP_BYE)
    return -1;
  adata->status = NNTP_NONE;
 
  struct Connection *conn = adata->conn;
  if (mutt_socket_open(conn) < 0)
    return -1;
 
  char buf[256] = { 0 };
  int cap;
  bool posting = false, auth = true;
  int rc = -1;
 
  if (mutt_socket_readln(buf, sizeof(buf), conn) < 0)
  {
    nntp_connect_error(adata);
    goto done;
  }
 
  if (mutt_str_startswith(buf, "200"))
  {
    posting = true;
  }
  else if (!mutt_str_startswith(buf, "201"))
  {
    mutt_socket_close(conn);
    mutt_str_remove_trailing_ws(buf);
    mutt_error("%s", buf);
    goto done;
  }
 
  /* get initial capabilities */
  cap = nntp_capabilities(adata);
  if (cap < 0)
    goto done;
 
  /* tell news server to switch to mode reader if it isn't so */
  if (cap > 0)
  {
    if ((mutt_socket_send(conn, "MODE READER\r\n") < 0) ||
        (mutt_socket_readln(buf, sizeof(buf), conn) < 0))
    {
      nntp_connect_error(adata);
      goto done;
    }
 
    if (mutt_str_startswith(buf, "200"))
    {
      posting = true;
    }
    else if (mutt_str_startswith(buf, "201"))
    {
      posting = false;
    }
    else if (adata->hasCAPABILITIES)
    {
      /* error if has capabilities, ignore result if no capabilities */
      mutt_socket_close(conn);
      mutt_error(_("Could not switch to reader mode"));
      goto done;
    }
 
    /* recheck capabilities after MODE READER */
    if (adata->hasCAPABILITIES)
    {
      cap = nntp_capabilities(adata);
      if (cap < 0)
        goto done;
    }
  }
 
  mutt_message(_("Connected to %s. %s"), conn->account.host,
               posting ? _("Posting is ok") : _("Posting is NOT ok"));
  mutt_sleep(1);
 
#ifdef USE_SSL
  /* Attempt STARTTLS if available and desired. */
  const bool c_ssl_force_tls = cs_subset_bool(NeoMutt->sub, "ssl_force_tls");
  if ((adata->use_tls != 1) && (adata->hasSTARTTLS || c_ssl_force_tls))
  {
    if (adata->use_tls == 0)
    {
      adata->use_tls = c_ssl_force_tls ||
                               (query_quadoption(_("Secure connection with TLS?"),
                                                 NeoMutt->sub, "ssl_starttls") == MUTT_YES) ?
                           2 :
                           1;
    }
    if (adata->use_tls == 2)
    {
      if ((mutt_socket_send(conn, "STARTTLS\r\n") < 0) ||
          (mutt_socket_readln(buf, sizeof(buf), conn) < 0))
      {
        nntp_connect_error(adata);
        goto done;
      }
      // Clear any data after the STARTTLS acknowledgement
      mutt_socket_empty(conn);
      if (!mutt_str_startswith(buf, "382"))
      {
        adata->use_tls = 0;
        mutt_error("STARTTLS: %s", buf);
      }
      else if (mutt_ssl_starttls(conn))
      {
        adata->use_tls = 0;
        adata->status = NNTP_NONE;
        mutt_socket_close(adata->conn);
        mutt_error(_("Could not negotiate TLS connection"));
        goto done;
      }
      else
      {
        /* recheck capabilities after STARTTLS */
        cap = nntp_capabilities(adata);
        if (cap < 0)
          goto done;
      }
    }
  }
#endif
 
  /* authentication required? */
  if (conn->account.flags & MUTT_ACCT_USER)
  {
    if (!conn->account.user[0])
      auth = false;
  }
  else
  {
    if ((mutt_socket_send(conn, "STAT\r\n") < 0) ||
        (mutt_socket_readln(buf, sizeof(buf), conn) < 0))
    {
      nntp_connect_error(adata);
      goto done;
    }
    if (!mutt_str_startswith(buf, "480"))
      auth = false;
  }
 
  /* authenticate */
  if (auth && (nntp_auth(adata) < 0))
    goto done;
 
  /* get final capabilities after authentication */
  if (adata->hasCAPABILITIES && (auth || (cap > 0)))
  {
    cap = nntp_capabilities(adata);
    if (cap < 0)
      goto done;
    if (cap > 0)
    {
      mutt_socket_close(conn);
      mutt_error(_("Could not switch to reader mode"));
      goto done;
    }
  }
 
  /* attempt features */
  if (nntp_attempt_features(adata) < 0)
    goto done;
 
  rc = 0;
  adata->status = NNTP_OK;
 
done:
  return rc;
}

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nntp_post()

int nntp_post	(	struct Mailbox *	m,
		const char *	msg )

Post article.

Parameters

m	Mailbox
msg	Message to post

Return values

0	Success
-1	Failure

Definition at line 1945 of file nntp.c.

{
  struct NntpMboxData *mdata = NULL;
  struct NntpMboxData tmp_mdata = { 0 };
  char buf[1024] = { 0 };
  int rc = -1;
 
  if (m && (m->type == MUTT_NNTP))
  {
    mdata = m->mdata;
  }
  else
  {
    const char *const c_news_server = cs_subset_string(NeoMutt->sub, "news_server");
    CurrentNewsSrv = nntp_select_server(m, c_news_server, false);
    if (!CurrentNewsSrv)
      goto done;
 
    mdata = &tmp_mdata;
    mdata->adata = CurrentNewsSrv;
    mdata->group = NULL;
  }
 
  FILE *fp = mutt_file_fopen(msg, "r");
  if (!fp)
  {
    mutt_perror("%s", msg);
    goto done;
  }
 
  mutt_str_copy(buf, "POST\r\n", sizeof(buf));
  if (nntp_query(mdata, buf, sizeof(buf)) < 0)
  {
    mutt_file_fclose(&fp);
    goto done;
  }
  if (buf[0] != '3')
  {
    mutt_error(_("Can't post article: %s"), buf);
    mutt_file_fclose(&fp);
    goto done;
  }
 
  buf[0] = '.';
  buf[1] = '\0';
  while (fgets(buf + 1, sizeof(buf) - 2, fp))
  {
    size_t len = strlen(buf);
    if (buf[len - 1] == '\n')
    {
      buf[len - 1] = '\r';
      buf[len] = '\n';
      len++;
      buf[len] = '\0';
    }
    if (mutt_socket_send_d(mdata->adata->conn, (buf[1] == '.') ? buf : buf + 1,
                           MUTT_SOCK_LOG_FULL) < 0)
    {
      mutt_file_fclose(&fp);
      nntp_connect_error(mdata->adata);
      goto done;
    }
  }
  mutt_file_fclose(&fp);
 
  if (((buf[strlen(buf) - 1] != '\n') &&
       (mutt_socket_send_d(mdata->adata->conn, "\r\n", MUTT_SOCK_LOG_FULL) < 0)) ||
      (mutt_socket_send_d(mdata->adata->conn, ".\r\n", MUTT_SOCK_LOG_FULL) < 0) ||
      (mutt_socket_readln(buf, sizeof(buf), mdata->adata->conn) < 0))
  {
    nntp_connect_error(mdata->adata);
    goto done;
  }
  if (buf[0] != '2')
  {
    mutt_error(_("Can't post article: %s"), buf);
    goto done;
  }
  rc = 0;
 
done:
  return rc;
}

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nntp_active_fetch()

int nntp_active_fetch	(	struct NntpAccountData *	adata,
		bool	mark_new )

Fetch list of all newsgroups from server.

Parameters

adata	NNTP server
mark_new	Mark the groups as new

Return values

0	Success
-1	Failure

Definition at line 2036 of file nntp.c.

{
  struct NntpMboxData tmp_mdata = { 0 };
  char msg[256] = { 0 };
  char buf[1024] = { 0 };
  unsigned int i;
  int rc;
 
  snprintf(msg, sizeof(msg), _("Loading list of groups from server %s..."),
           adata->conn->account.host);
  mutt_message("%s", msg);
  if (nntp_date(adata, &adata->newgroups_time) < 0)
    return -1;
 
  tmp_mdata.adata = adata;
  tmp_mdata.group = NULL;
  i = adata->groups_num;
  mutt_str_copy(buf, "LIST\r\n", sizeof(buf));
  rc = nntp_fetch_lines(&tmp_mdata, buf, sizeof(buf), msg, nntp_add_group, adata);
  if (rc)
  {
    if (rc > 0)
    {
      mutt_error("LIST: %s", buf);
    }
    return -1;
  }
 
  if (mark_new)
  {
    for (; i < adata->groups_num; i++)
    {
      struct NntpMboxData *mdata = adata->groups_list[i];
      mdata->has_new_mail = true;
    }
  }
 
  for (i = 0; i < adata->groups_num; i++)
  {
    struct NntpMboxData *mdata = adata->groups_list[i];
 
    if (mdata && mdata->deleted && !mdata->newsrc_ent)
    {
      nntp_delete_group_cache(mdata);
      mutt_hash_delete(adata->groups_hash, mdata->group, NULL);
      adata->groups_list[i] = NULL;
    }
  }
 
  const bool c_nntp_load_description = cs_subset_bool(NeoMutt->sub, "nntp_load_description");
  if (c_nntp_load_description)
    rc = get_description(&tmp_mdata, "*", _("Loading descriptions..."));
 
  nntp_active_save_cache(adata);
  if (rc < 0)
    return -1;
  mutt_clear_error();
  return 0;
}

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nntp_check_new_groups()

int nntp_check_new_groups	(	struct Mailbox *	m,
		struct NntpAccountData *	adata )

Check for new groups/articles in subscribed groups.

Parameters

m	Mailbox
adata	NNTP server

Return values

1	New groups found
0	No new groups
-1	Error

Definition at line 2104 of file nntp.c.

{
  struct NntpMboxData tmp_mdata = { 0 };
  time_t now = 0;
  char buf[1024] = { 0 };
  char *msg = _("Checking for new newsgroups...");
  unsigned int i;
  int rc, update_active = false;
 
  if (!adata || !adata->newgroups_time)
    return -1;
 
  /* check subscribed newsgroups for new articles */
  const bool c_show_new_news = cs_subset_bool(NeoMutt->sub, "show_new_news");
  if (c_show_new_news)
  {
    mutt_message(_("Checking for new messages..."));
    for (i = 0; i < adata->groups_num; i++)
    {
      struct NntpMboxData *mdata = adata->groups_list[i];
 
      if (mdata && mdata->subscribed)
      {
        rc = nntp_group_poll(mdata, true);
        if (rc < 0)
          return -1;
        if (rc > 0)
          update_active = true;
      }
    }
  }
  else if (adata->newgroups_time)
  {
    return 0;
  }
 
  /* get list of new groups */
  mutt_message("%s", msg);
  if (nntp_date(adata, &now) < 0)
    return -1;
  tmp_mdata.adata = adata;
  if (m && m->mdata)
    tmp_mdata.group = ((struct NntpMboxData *) m->mdata)->group;
  else
    tmp_mdata.group = NULL;
  i = adata->groups_num;
  struct tm tm = mutt_date_gmtime(adata->newgroups_time);
  snprintf(buf, sizeof(buf), "NEWGROUPS %02d%02d%02d %02d%02d%02d GMT\r\n",
           tm.tm_year % 100, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
  rc = nntp_fetch_lines(&tmp_mdata, buf, sizeof(buf), msg, nntp_add_group, adata);
  if (rc)
  {
    if (rc > 0)
    {
      mutt_error("NEWGROUPS: %s", buf);
    }
    return -1;
  }
 
  /* new groups found */
  rc = 0;
  if (adata->groups_num != i)
  {
    int groups_num = i;
 
    adata->newgroups_time = now;
    for (; i < adata->groups_num; i++)
    {
      struct NntpMboxData *mdata = adata->groups_list[i];
      mdata->has_new_mail = true;
    }
 
    /* loading descriptions */
    const bool c_nntp_load_description = cs_subset_bool(NeoMutt->sub, "nntp_load_description");
    if (c_nntp_load_description)
    {
      unsigned int count = 0;
      struct Progress *progress = progress_new(MUTT_PROGRESS_READ, adata->groups_num - i);
      progress_set_message(progress, _("Loading descriptions..."));
 
      for (i = groups_num; i < adata->groups_num; i++)
      {
        struct NntpMboxData *mdata = adata->groups_list[i];
 
        if (get_description(mdata, NULL, NULL) < 0)
        {
          progress_free(&progress);
          return -1;
        }
        progress_update(progress, ++count, -1);
      }
      progress_free(&progress);
    }
    update_active = true;
    rc = 1;
  }
  if (update_active)
    nntp_active_save_cache(adata);
  mutt_clear_error();
  return rc;
}

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nntp_check_msgid()

int nntp_check_msgid	(	struct Mailbox *	m,
		const char *	msgid )

Fetch article by Message-ID.

Parameters

m	Mailbox
msgid	Message ID

Return values

0	Success
1	No such article
-1	Error

Definition at line 2214 of file nntp.c.

{
  if (!m)
    return -1;
 
  struct NntpMboxData *mdata = m->mdata;
  char buf[1024] = { 0 };
 
  FILE *fp = mutt_file_mkstemp();
  if (!fp)
  {
    mutt_perror(_("Can't create temporary file"));
    return -1;
  }
 
  snprintf(buf, sizeof(buf), "HEAD %s\r\n", msgid);
  int rc = nntp_fetch_lines(mdata, buf, sizeof(buf), NULL, fetch_tempfile, fp);
  if (rc)
  {
    mutt_file_fclose(&fp);
    if (rc < 0)
      return -1;
    if (mutt_str_startswith(buf, "430"))
      return 1;
    mutt_error("HEAD: %s", buf);
    return -1;
  }
 
  /* parse header */
  mx_alloc_memory(m, m->msg_count);
  m->emails[m->msg_count] = email_new();
  struct Email *e = m->emails[m->msg_count];
  e->edata = nntp_edata_new();
  e->edata_free = nntp_edata_free;
  e->env = mutt_rfc822_read_header(fp, e, false, false);
  mutt_file_fclose(&fp);
 
  /* get article number */
  if (e->env->xref)
  {
    nntp_parse_xref(m, e);
  }
  else
  {
    snprintf(buf, sizeof(buf), "STAT %s\r\n", msgid);
    if (nntp_query(mdata, buf, sizeof(buf)) < 0)
    {
      email_free(&e);
      return -1;
    }
    sscanf(buf + 4, ANUM_FMT, &nntp_edata_get(e)->article_num);
  }
 
  /* reset flags */
  e->read = false;
  e->old = false;
  e->deleted = false;
  e->changed = true;
  e->received = e->date_sent;
  e->index = m->msg_count++;
  mailbox_changed(m, NT_MAILBOX_INVALID);
  return 0;
}

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nntp_check_children()

int nntp_check_children	(	struct Mailbox *	m,
		const char *	msgid )

Fetch children of article with the Message-ID.

Parameters

m	Mailbox
msgid	Message ID to find

Return values

0	Success
-1	Failure

Definition at line 2285 of file nntp.c.

{
  if (!m)
    return -1;
 
  struct NntpMboxData *mdata = m->mdata;
  char buf[256] = { 0 };
  int rc;
  struct HeaderCache *hc = NULL;
 
  if (!mdata || !mdata->adata)
    return -1;
  if (mdata->first_message > mdata->last_loaded)
    return 0;
 
  /* init context */
  struct ChildCtx cc = { 0 };
  cc.mailbox = m;
  cc.num = 0;
  cc.max = 10;
  cc.child = MUTT_MEM_MALLOC(cc.max, anum_t);
 
  /* fetch numbers of child messages */
  snprintf(buf, sizeof(buf), "XPAT References " ANUM_FMT "-" ANUM_FMT " *%s*\r\n",
           mdata->first_message, mdata->last_loaded, msgid);
  rc = nntp_fetch_lines(mdata, buf, sizeof(buf), NULL, fetch_children, &cc);
  if (rc)
  {
    FREE(&cc.child);
    if (rc > 0)
    {
      if (!mutt_str_startswith(buf, "500"))
      {
        mutt_error("XPAT: %s", buf);
      }
      else
      {
        mutt_error(_("Unable to find child articles because server does not support XPAT command"));
      }
    }
    return -1;
  }
 
  /* fetch all found messages */
  bool verbose = m->verbose;
  m->verbose = false;
#ifdef USE_HCACHE
  hc = nntp_hcache_open(mdata);
#endif
  int old_msg_count = m->msg_count;
  for (int i = 0; i < cc.num; i++)
  {
    rc = nntp_fetch_headers(m, hc, cc.child[i], cc.child[i], true);
    if (rc < 0)
      break;
  }
  if (m->msg_count > old_msg_count)
    mailbox_changed(m, NT_MAILBOX_INVALID);
 
#ifdef USE_HCACHE
  hcache_close(&hc);
#endif
  m->verbose = verbose;
  FREE(&cc.child);
  return (rc < 0) ? -1 : 0;
}

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Variable Documentation

CurrentNewsSrv

struct NntpAccountData* CurrentNewsSrv = NULL

Current news server.

Current NNTP news server.

Definition at line 76 of file nntp.c.

OverviewFmt

const char* OverviewFmt

static

Initial value:

= "Subject:\0"
                                 "From:\0"
                                 "Date:\0"
                                 "Message-ID:\0"
                                 "References:\0"
                                 "Content-Length:\0"
                                 "Lines:\0"
                                 "\0"

Fields to get from server, if it supports the LIST OVERVIEW.FMT feature.

Definition at line 79 of file nntp.c.