newsrc.c File Reference

Read/parse/write an NNTP config file of subscribed newsgroups. More...

#include "config.h"
#include <dirent.h>
#include <errno.h>
#include <limits.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.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 "mutt.h"
#include "lib.h"
#include "bcache/lib.h"
#include "expando/lib.h"
#include "adata.h"
#include "edata.h"
#include "expando_newsrc.h"
#include "mdata.h"
#include "mutt_logging.h"
#include "mutt_socket.h"
#include "muttlib.h"
#include "hcache/lib.h"

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Functions
static struct NntpMboxData *	mdata_find (struct NntpAccountData *adata, const char *group)
	Find NntpMboxData for given newsgroup or add it.
void	nntp_acache_free (struct NntpMboxData *mdata)
	Remove all temporarily cache files.
void	nntp_newsrc_close (struct NntpAccountData *adata)
	Unlock and close .newsrc file.
void	nntp_group_unread_stat (struct NntpMboxData *mdata)
	Count number of unread articles using .newsrc data.
int	nntp_newsrc_parse (struct NntpAccountData *adata)
	Parse .newsrc file.
void	nntp_newsrc_gen_entries (struct Mailbox *m)
	Generate array of .newsrc entries.
static int	update_file (char *filename, char *buf)
	Update file with new contents.
int	nntp_newsrc_update (struct NntpAccountData *adata)
	Update .newsrc file.
static void	cache_expand (char *dst, size_t dstlen, struct ConnAccount *cac, const char *src)
	Make fully qualified cache file name.
void	nntp_expand_path (char *buf, size_t buflen, struct ConnAccount *cac)
	Make fully qualified url from newsgroup name.
int	nntp_add_group (char *line, void *data)
	Parse newsgroup.
static int	active_get_cache (struct NntpAccountData *adata)
	Load list of all newsgroups from cache.
int	nntp_active_save_cache (struct NntpAccountData *adata)
	Save list of all newsgroups to cache.
static void	nntp_hcache_namer (const struct StoreOps *store_ops, const char *path, struct Buffer *dest)
	Compose hcache file names - Implements hcache_namer_t -.
struct HeaderCache *	nntp_hcache_open (struct NntpMboxData *mdata)
	Open newsgroup hcache.
void	nntp_hcache_update (struct NntpMboxData *mdata, struct HeaderCache *hc)
	Remove stale cached headers.
static int	nntp_bcache_delete (const char *id, struct BodyCache *bcache, void *data)
	Delete an entry from the message cache - Implements bcache_list_t -.
void	nntp_bcache_update (struct NntpMboxData *mdata)
	Remove stale cached messages.
void	nntp_delete_group_cache (struct NntpMboxData *mdata)
	Remove hcache and bcache of newsgroup.
void	nntp_clear_cache (struct NntpAccountData *adata)
	Clear the NNTP cache.
static const char *	nntp_get_field (enum ConnAccountField field, void *gf_data)
	Get connection login credentials - Implements ConnAccount::get_field() -.
struct NntpAccountData *	nntp_select_server (struct Mailbox *m, const char *server, bool leave_lock)
	Open a connection to an NNTP server.
void	nntp_article_status (struct Mailbox *m, struct Email *e, char *group, anum_t anum)
	Get status of articles from .newsrc.
struct NntpMboxData *	mutt_newsgroup_subscribe (struct NntpAccountData *adata, char *group)
	Subscribe newsgroup.
struct NntpMboxData *	mutt_newsgroup_unsubscribe (struct NntpAccountData *adata, char *group)
	Unsubscribe newsgroup.
struct NntpMboxData *	mutt_newsgroup_catchup (struct Mailbox *m, struct NntpAccountData *adata, char *group)
	Catchup newsgroup.
struct NntpMboxData *	mutt_newsgroup_uncatchup (struct Mailbox *m, struct NntpAccountData *adata, char *group)
	Uncatchup newsgroup.
void	nntp_mailbox (struct Mailbox *m, char *buf, size_t buflen)
	Get first newsgroup with new messages.

Detailed Description

Read/parse/write an NNTP config file of subscribed newsgroups.

Authors

• Richard Russon
• Pietro Cerutti
• Ian Zimmerman
• Ramkumar Ramachandra
• Tóth János

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 newsrc.c.

Function Documentation

mdata_find()

static struct NntpMboxData * mdata_find ( struct NntpAccountData * adata, const char * group )

static

Find NntpMboxData for given newsgroup or add it.

Parameters

adata	NNTP server
group	Newsgroup

Return values

ptr	NNTP data
NULL	Error

Definition at line 73 of file newsrc.c.

{
  struct NntpMboxData *mdata = mutt_hash_find(adata->groups_hash, group);
  if (mdata)
    return mdata;
 
  size_t len = strlen(group) + 1;
  /* create NntpMboxData structure and add it to hash */
  mdata = mutt_mem_calloc(1, sizeof(struct NntpMboxData) + len);
  mdata->group = (char *) mdata + sizeof(struct NntpMboxData);
  mutt_str_copy(mdata->group, group, len);
  mdata->adata = adata;
  mdata->deleted = true;
  mutt_hash_insert(adata->groups_hash, mdata->group, mdata);
 
  /* add NntpMboxData to list */
  if (adata->groups_num >= adata->groups_max)
  {
    adata->groups_max *= 2;
    MUTT_MEM_REALLOC(&adata->groups_list, adata->groups_max, struct NntpMboxData *);
  }
  adata->groups_list[adata->groups_num++] = mdata;
 
  return mdata;
}

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nntp_acache_free()

void nntp_acache_free

(

struct NntpMboxData *

mdata

)

Remove all temporarily cache files.

Parameters

mdata

NNTP Mailbox data

Definition at line 103 of file newsrc.c.

{
  for (int i = 0; i < NNTP_ACACHE_LEN; i++)
  {
    if (mdata->acache[i].path)
    {
      unlink(mdata->acache[i].path);
      FREE(&mdata->acache[i].path);
    }
  }
}

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nntp_newsrc_close()

void nntp_newsrc_close

(

struct NntpAccountData *

adata

)

Unlock and close .newsrc file.

Parameters

adata

NNTP server

Definition at line 119 of file newsrc.c.

{
  if (!adata->fp_newsrc)
    return;
 
  mutt_debug(LL_DEBUG1, "Unlocking %s\n", adata->newsrc_file);
  mutt_file_unlock(fileno(adata->fp_newsrc));
  mutt_file_fclose(&adata->fp_newsrc);
}

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nntp_group_unread_stat()

void nntp_group_unread_stat

(

struct NntpMboxData *

mdata

)

Count number of unread articles using .newsrc data.

Parameters

mdata

NNTP Mailbox data

Definition at line 133 of file newsrc.c.

{
  mdata->unread = 0;
  if ((mdata->last_message == 0) ||
      (mdata->first_message > mdata->last_message) || !mdata->newsrc_ent)
  {
    return;
  }
 
  mdata->unread = mdata->last_message - mdata->first_message + 1;
  for (unsigned int i = 0; i < mdata->newsrc_len; i++)
  {
    anum_t first = mdata->newsrc_ent[i].first;
    if (first < mdata->first_message)
      first = mdata->first_message;
    anum_t last = mdata->newsrc_ent[i].last;
    if (last > mdata->last_message)
      last = mdata->last_message;
    if (first <= last)
      mdata->unread -= last - first + 1;
  }
}

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nntp_newsrc_parse()

int nntp_newsrc_parse

(

struct NntpAccountData *

adata

)

Parse .newsrc file.

Parameters

adata

NNTP server

Return values

0	Not changed
1	Parsed
-1	Error

Definition at line 163 of file newsrc.c.

{
  if (!adata)
    return -1;
 
  char *line = NULL;
  struct stat st = { 0 };
 
  if (adata->fp_newsrc)
  {
    /* if we already have a handle, close it and reopen */
    mutt_file_fclose(&adata->fp_newsrc);
  }
  else
  {
    /* if file doesn't exist, create it */
    adata->fp_newsrc = mutt_file_fopen(adata->newsrc_file, "a");
    mutt_file_fclose(&adata->fp_newsrc);
  }
 
  /* open .newsrc */
  adata->fp_newsrc = mutt_file_fopen(adata->newsrc_file, "r");
  if (!adata->fp_newsrc)
  {
    mutt_perror("%s", adata->newsrc_file);
    return -1;
  }
 
  /* lock it */
  mutt_debug(LL_DEBUG1, "Locking %s\n", adata->newsrc_file);
  if (mutt_file_lock(fileno(adata->fp_newsrc), false, true))
  {
    mutt_file_fclose(&adata->fp_newsrc);
    return -1;
  }
 
  if (stat(adata->newsrc_file, &st) != 0)
  {
    mutt_perror("%s", adata->newsrc_file);
    nntp_newsrc_close(adata);
    return -1;
  }
 
  if ((adata->size == st.st_size) && (adata->mtime == st.st_mtime))
    return 0;
 
  adata->size = st.st_size;
  adata->mtime = st.st_mtime;
  adata->newsrc_modified = true;
  mutt_debug(LL_DEBUG1, "Parsing %s\n", adata->newsrc_file);
 
  /* .newsrc has been externally modified or hasn't been loaded yet */
  for (unsigned int i = 0; i < adata->groups_num; i++)
  {
    struct NntpMboxData *mdata = adata->groups_list[i];
    if (!mdata)
      continue;
 
    mdata->subscribed = false;
    mdata->newsrc_len = 0;
    FREE(&mdata->newsrc_ent);
  }
 
  line = MUTT_MEM_MALLOC(st.st_size + 1, char);
  while (st.st_size && fgets(line, st.st_size + 1, adata->fp_newsrc))
  {
    char *b = NULL, *h = NULL;
    unsigned int j = 1;
    bool subs = false;
 
    /* find end of newsgroup name */
    char *p = strpbrk(line, ":!");
    if (!p)
      continue;
 
    /* ":" - subscribed, "!" - unsubscribed */
    if (*p == ':')
      subs = true;
    *p++ = '\0';
 
    /* get newsgroup data */
    struct NntpMboxData *mdata = mdata_find(adata, line);
    FREE(&mdata->newsrc_ent);
 
    /* count number of entries */
    b = p;
    while (*b)
      if (*b++ == ',')
        j++;
    mdata->newsrc_ent = MUTT_MEM_CALLOC(j, struct NewsrcEntry);
    mdata->subscribed = subs;
 
    /* parse entries */
    j = 0;
    while (p)
    {
      b = p;
 
      /* find end of entry */
      p = strchr(p, ',');
      if (p)
        *p++ = '\0';
 
      /* first-last or single number */
      h = strchr(b, '-');
      if (h)
        *h++ = '\0';
      else
        h = b;
 
      if ((sscanf(b, ANUM_FMT, &mdata->newsrc_ent[j].first) == 1) &&
          (sscanf(h, ANUM_FMT, &mdata->newsrc_ent[j].last) == 1))
      {
        j++;
      }
    }
    if (j == 0)
    {
      mdata->newsrc_ent[j].first = 1;
      mdata->newsrc_ent[j].last = 0;
      j++;
    }
    if (mdata->last_message == 0)
      mdata->last_message = mdata->newsrc_ent[j - 1].last;
    mdata->newsrc_len = j;
    MUTT_MEM_REALLOC(&mdata->newsrc_ent, j, struct NewsrcEntry);
    nntp_group_unread_stat(mdata);
    mutt_debug(LL_DEBUG2, "%s\n", mdata->group);
  }
  FREE(&line);
  return 1;
}

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nntp_newsrc_gen_entries()

void nntp_newsrc_gen_entries

(

struct Mailbox *

m

)

Generate array of .newsrc entries.

Parameters

m

Mailbox

Definition at line 300 of file newsrc.c.

{
  if (!m)
    return;
 
  struct NntpMboxData *mdata = m->mdata;
  anum_t last = 0, first = 1;
  bool series;
  unsigned int entries;
 
  const enum EmailSortType c_sort = cs_subset_sort(NeoMutt->sub, "sort");
  if (c_sort != EMAIL_SORT_UNSORTED)
  {
    cs_subset_str_native_set(NeoMutt->sub, "sort", EMAIL_SORT_UNSORTED, NULL);
    mailbox_changed(m, NT_MAILBOX_RESORT);
  }
 
  entries = mdata->newsrc_len;
  if (!entries)
  {
    entries = 5;
    mdata->newsrc_ent = MUTT_MEM_CALLOC(entries, struct NewsrcEntry);
  }
 
  /* Set up to fake initial sequence from 1 to the article before the
   * first article in our list */
  mdata->newsrc_len = 0;
  series = true;
  for (int i = 0; i < m->msg_count; i++)
  {
    struct Email *e = m->emails[i];
    if (!e)
      break;
 
    /* search for first unread */
    if (series)
    {
      /* We don't actually check sequential order, since we mark
       * "missing" entries as read/deleted */
      last = nntp_edata_get(e)->article_num;
      if ((last >= mdata->first_message) && !e->deleted && !e->read)
      {
        if (mdata->newsrc_len >= entries)
        {
          entries *= 2;
          MUTT_MEM_REALLOC(&mdata->newsrc_ent, entries, struct NewsrcEntry);
        }
        mdata->newsrc_ent[mdata->newsrc_len].first = first;
        mdata->newsrc_ent[mdata->newsrc_len].last = last - 1;
        mdata->newsrc_len++;
        series = false;
      }
    }
    else
    {
      /* search for first read */
      if (e->deleted || e->read)
      {
        first = last + 1;
        series = true;
      }
      last = nntp_edata_get(e)->article_num;
    }
  }
 
  if (series && (first <= mdata->last_loaded))
  {
    if (mdata->newsrc_len >= entries)
    {
      entries++;
      MUTT_MEM_REALLOC(&mdata->newsrc_ent, entries, struct NewsrcEntry);
    }
    mdata->newsrc_ent[mdata->newsrc_len].first = first;
    mdata->newsrc_ent[mdata->newsrc_len].last = mdata->last_loaded;
    mdata->newsrc_len++;
  }
  MUTT_MEM_REALLOC(&mdata->newsrc_ent, mdata->newsrc_len, struct NewsrcEntry);
 
  if (c_sort != EMAIL_SORT_UNSORTED)
  {
    cs_subset_str_native_set(NeoMutt->sub, "sort", c_sort, NULL);
    mailbox_changed(m, NT_MAILBOX_RESORT);
  }
}

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update_file()

static int update_file ( char * filename, char * buf )

static

Update file with new contents.

Parameters

filename	File to update
buf	New context

Return values

0	Success
-1	Failure

Definition at line 392 of file newsrc.c.

{
  FILE *fp = NULL;
  char tempfile[PATH_MAX] = { 0 };
  int rc = -1;
 
  while (true)
  {
    snprintf(tempfile, sizeof(tempfile), "%s.tmp", filename);
    fp = mutt_file_fopen(tempfile, "w");
    if (!fp)
    {
      mutt_perror("%s", tempfile);
      *tempfile = '\0';
      break;
    }
    if (fputs(buf, fp) == EOF)
    {
      mutt_perror("%s", tempfile);
      break;
    }
    if (mutt_file_fclose(&fp) == EOF)
    {
      mutt_perror("%s", tempfile);
      fp = NULL;
      break;
    }
    fp = NULL;
    if (rename(tempfile, filename) < 0)
    {
      mutt_perror("%s", filename);
      break;
    }
    *tempfile = '\0';
    rc = 0;
    break;
  }
  mutt_file_fclose(&fp);
 
  if (*tempfile)
    unlink(tempfile);
  return rc;
}

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nntp_newsrc_update()

int nntp_newsrc_update

(

struct NntpAccountData *

adata

)

Update .newsrc file.

Parameters

adata

NNTP server

Return values

0	Success
-1	Failure

Definition at line 442 of file newsrc.c.

{
  if (!adata)
    return -1;
 
  int rc = -1;
 
  size_t buflen = 10240;
  char *buf = MUTT_MEM_CALLOC(buflen, char);
  size_t off = 0;
 
  /* we will generate full newsrc here */
  for (unsigned int i = 0; i < adata->groups_num; i++)
  {
    struct NntpMboxData *mdata = adata->groups_list[i];
 
    if (!mdata || !mdata->newsrc_ent)
      continue;
 
    /* write newsgroup name */
    if ((off + strlen(mdata->group) + 3) > buflen)
    {
      buflen *= 2;
      MUTT_MEM_REALLOC(&buf, buflen, char);
    }
    snprintf(buf + off, buflen - off, "%s%c ", mdata->group, mdata->subscribed ? ':' : '!');
    off += strlen(buf + off);
 
    /* write entries */
    for (unsigned int j = 0; j < mdata->newsrc_len; j++)
    {
      if ((off + 1024) > buflen)
      {
        buflen *= 2;
        MUTT_MEM_REALLOC(&buf, buflen, char);
      }
      if (j)
        buf[off++] = ',';
      if (mdata->newsrc_ent[j].first == mdata->newsrc_ent[j].last)
      {
        snprintf(buf + off, buflen - off, ANUM_FMT, mdata->newsrc_ent[j].first);
      }
      else if (mdata->newsrc_ent[j].first < mdata->newsrc_ent[j].last)
      {
        snprintf(buf + off, buflen - off, ANUM_FMT "-" ANUM_FMT,
                 mdata->newsrc_ent[j].first, mdata->newsrc_ent[j].last);
      }
      off += strlen(buf + off);
    }
    buf[off++] = '\n';
  }
  buf[off] = '\0';
 
  /* newrc being fully rewritten */
  mutt_debug(LL_DEBUG1, "Updating %s\n", adata->newsrc_file);
  if (adata->newsrc_file && (update_file(adata->newsrc_file, buf) == 0))
  {
    struct stat st = { 0 };
 
    rc = stat(adata->newsrc_file, &st);
    if (rc == 0)
    {
      adata->size = st.st_size;
      adata->mtime = st.st_mtime;
    }
    else
    {
      mutt_perror("%s", adata->newsrc_file);
    }
  }
  FREE(&buf);
  return rc;
}

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cache_expand()

static void cache_expand ( char * dst, size_t dstlen, struct ConnAccount * cac, const char * src )

static

Make fully qualified cache file name.

Parameters

dst	Buffer for filename
dstlen	Length of buffer
cac	Account
src	Path to add to the URL

Definition at line 523 of file newsrc.c.

{
  char file[PATH_MAX] = { 0 };
 
  /* server subdirectory */
  struct Url url = { 0 };
  account_to_url(cac, &url);
  url.path = mutt_str_dup(src);
  url_tostring(&url, file, sizeof(file), U_PATH);
  FREE(&url.path);
 
  /* remove trailing slash */
  char *c = file + strlen(file) - 1;
  if (*c == '/')
    *c = '\0';
 
  struct Buffer *tmp = buf_pool_get();
  buf_addstr(tmp, file);
  mutt_encode_path(tmp, file);
 
  const char *const c_news_cache_dir = cs_subset_path(NeoMutt->sub, "news_cache_dir");
  snprintf(dst, dstlen, "%s/%s", c_news_cache_dir, buf_string(tmp));
 
  buf_pool_release(&tmp);
}

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nntp_expand_path()

void nntp_expand_path	(	char *	buf,
		size_t	buflen,
		struct ConnAccount *	cac )

Make fully qualified url from newsgroup name.

Parameters

buf	Buffer for the result
buflen	Length of buffer
cac	Account to serialise

Definition at line 555 of file newsrc.c.

{
  struct Url url = { 0 };
 
  account_to_url(cac, &url);
  url.path = mutt_str_dup(buf);
  url_tostring(&url, buf, buflen, U_NO_FLAGS);
  FREE(&url.path);
}

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nntp_add_group()

int nntp_add_group	(	char *	line,
		void *	data )

Parse newsgroup.

Parameters

line	String to parse
data	NNTP data

Return values

0

Always

Definition at line 571 of file newsrc.c.

{
  struct NntpAccountData *adata = data;
  struct NntpMboxData *mdata = NULL;
  char group[1024] = { 0 };
  char desc[8192] = { 0 };
  char mod = '\0';
  anum_t first = 0, last = 0;
 
  if (!adata || !line)
    return 0;
 
  /* These sscanf limits must match the sizes of the group and desc arrays */
  if (sscanf(line, "%1023s " ANUM_FMT " " ANUM_FMT " %c %8191[^\n]", group,
             &last, &first, &mod, desc) < 4)
  {
    mutt_debug(LL_DEBUG2, "Can't parse server line: %s\n", line);
    return 0;
  }
 
  mdata = mdata_find(adata, group);
  mdata->deleted = false;
  mdata->first_message = first;
  mdata->last_message = last;
  mdata->allowed = (mod == 'y') || (mod == 'm');
  mutt_str_replace(&mdata->desc, desc);
  if (mdata->newsrc_ent || (mdata->last_cached != 0))
    nntp_group_unread_stat(mdata);
  else if (mdata->last_message && (mdata->first_message <= mdata->last_message))
    mdata->unread = mdata->last_message - mdata->first_message + 1;
  else
    mdata->unread = 0;
  return 0;
}

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active_get_cache()

static int active_get_cache ( struct NntpAccountData * adata )

static

Load list of all newsgroups from cache.

Parameters

adata

NNTP server

Return values

0	Success
-1	Failure

Definition at line 612 of file newsrc.c.

{
  char buf[8192] = { 0 };
  char file[4096] = { 0 };
  time_t t = 0;
 
  cache_expand(file, sizeof(file), &adata->conn->account, ".active");
  mutt_debug(LL_DEBUG1, "Parsing %s\n", file);
  FILE *fp = mutt_file_fopen(file, "r");
  if (!fp)
    return -1;
 
  if (!fgets(buf, sizeof(buf), fp) || (sscanf(buf, "%jd%4095s", &t, file) != 1) || (t == 0))
  {
    mutt_file_fclose(&fp);
    return -1;
  }
  adata->newgroups_time = t;
 
  mutt_message(_("Loading list of groups from cache..."));
  while (fgets(buf, sizeof(buf), fp))
    nntp_add_group(buf, adata);
  nntp_add_group(NULL, NULL);
  mutt_file_fclose(&fp);
  mutt_clear_error();
  return 0;
}

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nntp_active_save_cache()

int nntp_active_save_cache

(

struct NntpAccountData *

adata

)

Save list of all newsgroups to cache.

Parameters

adata

NNTP server

Return values

0	Success
-1	Failure

Definition at line 646 of file newsrc.c.

{
  if (!adata->cacheable)
    return 0;
 
  size_t buflen = 10240;
  char *buf = MUTT_MEM_CALLOC(buflen, char);
  snprintf(buf, buflen, "%lu\n", (unsigned long) adata->newgroups_time);
  size_t off = strlen(buf);
 
  for (unsigned int i = 0; i < adata->groups_num; i++)
  {
    struct NntpMboxData *mdata = adata->groups_list[i];
 
    if (!mdata || mdata->deleted)
      continue;
 
    if ((off + strlen(mdata->group) + (mdata->desc ? strlen(mdata->desc) : 0) + 50) > buflen)
    {
      buflen *= 2;
      MUTT_MEM_REALLOC(&buf, buflen, char);
    }
    snprintf(buf + off, buflen - off, "%s " ANUM_FMT " " ANUM_FMT " %c%s%s\n",
             mdata->group, mdata->last_message, mdata->first_message,
             mdata->allowed ? 'y' : 'n', mdata->desc ? " " : "",
             mdata->desc ? mdata->desc : "");
    off += strlen(buf + off);
  }
 
  char file[PATH_MAX] = { 0 };
  cache_expand(file, sizeof(file), &adata->conn->account, ".active");
  mutt_debug(LL_DEBUG1, "Updating %s\n", file);
  int rc = update_file(file, buf);
  FREE(&buf);
  return rc;
}

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nntp_hcache_open()

struct HeaderCache * nntp_hcache_open

(

struct NntpMboxData *

mdata

)

Open newsgroup hcache.

Parameters

mdata

NNTP Mailbox data

Return values

ptr	Header cache
NULL	Error

Definition at line 707 of file newsrc.c.

{
  struct Url url = { 0 };
  char file[PATH_MAX] = { 0 };
 
  const bool c_save_unsubscribed = cs_subset_bool(NeoMutt->sub, "save_unsubscribed");
  if (!mdata->adata || !mdata->adata->cacheable || !mdata->adata->conn || !mdata->group ||
      !(mdata->newsrc_ent || mdata->subscribed || c_save_unsubscribed))
  {
    return NULL;
  }
 
  account_to_url(&mdata->adata->conn->account, &url);
  url.path = mdata->group;
  url_tostring(&url, file, sizeof(file), U_PATH);
  const char *const c_news_cache_dir = cs_subset_path(NeoMutt->sub, "news_cache_dir");
  return hcache_open(c_news_cache_dir, file, nntp_hcache_namer, true);
}

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nntp_hcache_update()

void nntp_hcache_update	(	struct NntpMboxData *	mdata,
		struct HeaderCache *	hc )

Remove stale cached headers.

Parameters

mdata	NNTP Mailbox data
hc	Header cache

Definition at line 731 of file newsrc.c.

{
  if (!hc)
    return;
 
  char buf[32] = { 0 };
  bool old = false;
  anum_t first = 0, last = 0;
 
  /* fetch previous values of first and last */
  char *hdata = hcache_fetch_raw_str(hc, "index", 5);
  if (hdata)
  {
    mutt_debug(LL_DEBUG2, "hcache_fetch_email index: %s\n", hdata);
    if (sscanf(hdata, ANUM_FMT " " ANUM_FMT, &first, &last) == 2)
    {
      old = true;
      mdata->last_cached = last;
 
      /* clean removed headers from cache */
      for (anum_t current = first; current <= last; current++)
      {
        if ((current >= mdata->first_message) && (current <= mdata->last_message))
          continue;
 
        snprintf(buf, sizeof(buf), ANUM_FMT, current);
        mutt_debug(LL_DEBUG2, "hcache_delete_email %s\n", buf);
        hcache_delete_email(hc, buf, strlen(buf));
      }
    }
    FREE(&hdata);
  }
 
  /* store current values of first and last */
  if (!old || (mdata->first_message != first) || (mdata->last_message != last))
  {
    snprintf(buf, sizeof(buf), ANUM_FMT " " ANUM_FMT, mdata->first_message,
             mdata->last_message);
    mutt_debug(LL_DEBUG2, "hcache_store_email index: %s\n", buf);
    hcache_store_raw(hc, "index", 5, buf, strlen(buf) + 1);
  }
}

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nntp_bcache_update()

void nntp_bcache_update

(

struct NntpMboxData *

mdata

)

Remove stale cached messages.

Parameters

mdata

NNTP Mailbox data

Definition at line 799 of file newsrc.c.

{
  mutt_bcache_list(mdata->bcache, nntp_bcache_delete, mdata);
}

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nntp_delete_group_cache()

void nntp_delete_group_cache

(

struct NntpMboxData *

mdata

)

Remove hcache and bcache of newsgroup.

Parameters

mdata

NNTP Mailbox data

Definition at line 808 of file newsrc.c.

{
  if (!mdata || !mdata->adata || !mdata->adata->cacheable)
    return;
 
#ifdef USE_HCACHE
  const char *const c_header_cache_backend = cs_subset_string(NeoMutt->sub, "header_cache_backend");
  const struct StoreOps *store_ops = store_get_backend_ops(c_header_cache_backend);
  if (store_ops)
  {
    struct Buffer *file = buf_pool_get();
    nntp_hcache_namer(store_ops, mdata->group, file);
    cache_expand(file->data, file->dsize, &mdata->adata->conn->account, buf_string(file));
    unlink(buf_string(file));
    mdata->last_cached = 0;
    mutt_debug(LL_DEBUG2, "%s\n", buf_string(file));
    buf_pool_release(&file);
  }
#endif
 
  if (!mdata->bcache)
  {
    mdata->bcache = mutt_bcache_open(&mdata->adata->conn->account, mdata->group);
  }
  if (mdata->bcache)
  {
    mutt_debug(LL_DEBUG2, "%s/*\n", mdata->group);
    mutt_bcache_list(mdata->bcache, nntp_bcache_delete, NULL);
    mutt_bcache_close(&mdata->bcache);
  }
}

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nntp_clear_cache()

void nntp_clear_cache

(

struct NntpAccountData *

adata

)

Clear the NNTP cache.

Parameters

adata

NNTP server

Remove hcache and bcache of all unexistent and unsubscribed newsgroups

Definition at line 846 of file newsrc.c.

{
  if (!adata || !adata->cacheable)
    return;
 
  struct dirent *de = NULL;
  DIR *dir = NULL;
  struct Buffer *cache = buf_pool_get();
  struct Buffer *file = buf_pool_get();
 
  cache_expand(cache->data, cache->dsize, &adata->conn->account, NULL);
  buf_fix_dptr(cache);
  dir = mutt_file_opendir(buf_string(cache), MUTT_OPENDIR_NONE);
  if (!dir)
    goto done;
 
  buf_addch(cache, '/');
  const bool c_save_unsubscribed = cs_subset_bool(NeoMutt->sub, "save_unsubscribed");
 
  while ((de = readdir(dir)))
  {
    char *group = de->d_name;
    if (mutt_str_equal(group, ".") || mutt_str_equal(group, ".."))
      continue;
 
    buf_printf(file, "%s%s", buf_string(cache), group);
    struct stat st = { 0 };
    if (stat(buf_string(file), &st) != 0)
      continue;
 
#ifdef USE_HCACHE
    if (S_ISREG(st.st_mode))
    {
      char *ext = group + strlen(group) - 7;
      if ((strlen(group) < 8) || !mutt_str_equal(ext, ".hcache"))
        continue;
      *ext = '\0';
    }
    else
#endif
        if (!S_ISDIR(st.st_mode))
      continue;
 
    struct NntpMboxData tmp_mdata = { 0 };
    struct NntpMboxData *mdata = mutt_hash_find(adata->groups_hash, group);
    if (!mdata)
    {
      mdata = &tmp_mdata;
      mdata->adata = adata;
      mdata->group = group;
      mdata->bcache = NULL;
    }
    else if (mdata->newsrc_ent || mdata->subscribed || c_save_unsubscribed)
    {
      continue;
    }
 
    nntp_delete_group_cache(mdata);
    if (S_ISDIR(st.st_mode))
    {
      rmdir(buf_string(file));
      mutt_debug(LL_DEBUG2, "%s\n", buf_string(file));
    }
  }
  closedir(dir);
 
done:
  buf_pool_release(&cache);
  buf_pool_release(&file);
}

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nntp_select_server()

struct NntpAccountData * nntp_select_server	(	struct Mailbox *	m,
		const char *	server,
		bool	leave_lock )

Open a connection to an NNTP server.

Parameters

m	Mailbox
server	Server URL
leave_lock	Leave the server locked?

Return values

ptr	NNTP server
NULL	Error

Automatically loads a newsrc into memory, if necessary. Checks the size/mtime of a newsrc file, if it doesn't match, load again. Hmm, if a system has broken mtimes, this might mean the file is reloaded every time, which we'd have to fix.

See also

$newsrc

Definition at line 951 of file newsrc.c.

{
  char file[PATH_MAX] = { 0 };
  int rc;
  struct ConnAccount cac = { { 0 } };
  struct NntpAccountData *adata = NULL;
  struct Connection *conn = NULL;
 
  if (!server || (*server == '\0'))
  {
    mutt_error(_("No news server defined"));
    return NULL;
  }
 
  /* create account from news server url */
  cac.flags = 0;
  cac.port = NNTP_PORT;
  cac.type = MUTT_ACCT_TYPE_NNTP;
  cac.service = "nntp";
  cac.get_field = nntp_get_field;
 
  snprintf(file, sizeof(file), "%s%s", strstr(server, "://") ? "" : "news://", server);
  struct Url *url = url_parse(file);
  if (!url || (url->path && *url->path) ||
      !((url->scheme == U_NNTP) || (url->scheme == U_NNTPS)) || !url->host ||
      (account_from_url(&cac, url) < 0))
  {
    url_free(&url);
    mutt_error(_("%s is an invalid news server specification"), server);
    return NULL;
  }
  if (url->scheme == U_NNTPS)
  {
    cac.flags |= MUTT_ACCT_SSL;
    cac.port = NNTP_SSL_PORT;
  }
  url_free(&url);
 
  // If nntp_user and nntp_pass are specified in the config, use them to find the connection
  const char *user = NULL;
  const char *pass = NULL;
  if ((user = cac.get_field(MUTT_CA_USER, NULL)))
  {
    mutt_str_copy(cac.user, user, sizeof(cac.user));
    cac.flags |= MUTT_ACCT_USER;
  }
  if ((pass = cac.get_field(MUTT_CA_PASS, NULL)))
  {
    mutt_str_copy(cac.pass, pass, sizeof(cac.pass));
    cac.flags |= MUTT_ACCT_PASS;
  }
 
  /* find connection by account */
  conn = mutt_conn_find(&cac);
  if (!conn)
    return NULL;
  if (!(conn->account.flags & MUTT_ACCT_USER) && cac.flags & MUTT_ACCT_USER)
  {
    conn->account.flags |= MUTT_ACCT_USER;
    conn->account.user[0] = '\0';
  }
 
  /* new news server */
  adata = nntp_adata_new(conn);
 
  rc = nntp_open_connection(adata);
 
  /* try to create cache directory and enable caching */
  adata->cacheable = false;
  const char *const c_news_cache_dir = cs_subset_path(NeoMutt->sub, "news_cache_dir");
  if ((rc >= 0) && c_news_cache_dir)
  {
    cache_expand(file, sizeof(file), &conn->account, NULL);
    if (mutt_file_mkdir(file, S_IRWXU) < 0)
    {
      mutt_error(_("Can't create %s: %s"), file, strerror(errno));
    }
    adata->cacheable = true;
  }
 
  /* load .newsrc */
  if (rc >= 0)
  {
    const struct Expando *c_newsrc = cs_subset_expando(NeoMutt->sub, "newsrc");
    struct Buffer *buf = buf_pool_get();
    expando_filter(c_newsrc, NntpRenderCallbacks, adata, MUTT_FORMAT_NO_FLAGS,
                   buf->dsize, NeoMutt->env, buf);
    expand_path(buf, false);
    adata->newsrc_file = buf_strdup(buf);
    buf_pool_release(&buf);
    rc = nntp_newsrc_parse(adata);
  }
  if (rc >= 0)
  {
    /* try to load list of newsgroups from cache */
    if (adata->cacheable && (active_get_cache(adata) == 0))
    {
      rc = nntp_check_new_groups(m, adata);
    }
    else
    {
      /* load list of newsgroups from server */
      rc = nntp_active_fetch(adata, false);
    }
  }
 
  if (rc >= 0)
    nntp_clear_cache(adata);
 
#ifdef USE_HCACHE
  /* check cache files */
  if ((rc >= 0) && adata->cacheable)
  {
    struct dirent *de = NULL;
    DIR *dir = mutt_file_opendir(file, MUTT_OPENDIR_NONE);
 
    if (dir)
    {
      while ((de = readdir(dir)))
      {
        struct HeaderCache *hc = NULL;
        char *group = de->d_name;
 
        char *p = group + strlen(group) - 7;
        if ((strlen(group) < 8) || !mutt_str_equal(p, ".hcache"))
          continue;
        *p = '\0';
        struct NntpMboxData *mdata = mutt_hash_find(adata->groups_hash, group);
        if (!mdata)
          continue;
 
        hc = nntp_hcache_open(mdata);
        if (!hc)
          continue;
 
        /* fetch previous values of first and last */
        char *hdata = hcache_fetch_raw_str(hc, "index", 5);
        if (hdata)
        {
          anum_t first = 0, last = 0;
 
          if (sscanf(hdata, ANUM_FMT " " ANUM_FMT, &first, &last) == 2)
          {
            if (mdata->deleted)
            {
              mdata->first_message = first;
              mdata->last_message = last;
            }
            if ((last >= mdata->first_message) && (last <= mdata->last_message))
            {
              mdata->last_cached = last;
              mutt_debug(LL_DEBUG2, "%s last_cached=" ANUM_FMT "\n", mdata->group, last);
            }
          }
          FREE(&hdata);
        }
        hcache_close(&hc);
      }
      closedir(dir);
    }
  }
#endif
 
  if ((rc < 0) || !leave_lock)
    nntp_newsrc_close(adata);
 
  if (rc < 0)
  {
    mutt_hash_free(&adata->groups_hash);
    FREE(&adata->groups_list);
    FREE(&adata->newsrc_file);
    FREE(&adata->authenticators);
    FREE(&adata);
    mutt_socket_close(conn);
    FREE(&conn);
    return NULL;
  }
 
  return adata;
}

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nntp_article_status()

void nntp_article_status	(	struct Mailbox *	m,
		struct Email *	e,
		char *	group,
		anum_t	anum )

Get status of articles from .newsrc.

Parameters

m	Mailbox
e	Email
group	Newsgroup
anum	Article number

Full status flags are not supported by nntp, but we can fake some of them: Read = a read message number is in the .newsrc New = not read and not cached Old = not read but cached

Definition at line 1144 of file newsrc.c.

{
  struct NntpMboxData *mdata = m->mdata;
 
  if (group)
    mdata = mutt_hash_find(mdata->adata->groups_hash, group);
 
  if (!mdata)
    return;
 
  for (unsigned int i = 0; i < mdata->newsrc_len; i++)
  {
    if ((anum >= mdata->newsrc_ent[i].first) && (anum <= mdata->newsrc_ent[i].last))
    {
      /* can't use mutt_set_flag() because mview_update() didn't get called yet */
      e->read = true;
      return;
    }
  }
 
  /* article was not cached yet, it's new */
  if (anum > mdata->last_cached)
    return;
 
  /* article isn't read but cached, it's old */
  const bool c_mark_old = cs_subset_bool(NeoMutt->sub, "mark_old");
  if (c_mark_old)
    e->old = true;
}

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mutt_newsgroup_subscribe()

struct NntpMboxData * mutt_newsgroup_subscribe	(	struct NntpAccountData *	adata,
		char *	group )

Subscribe newsgroup.

Parameters

adata	NNTP server
group	Newsgroup

Return values

ptr	NNTP data
NULL	Error

Definition at line 1181 of file newsrc.c.

{
  if (!adata || !adata->groups_hash || !group || (*group == '\0'))
    return NULL;
 
  struct NntpMboxData *mdata = mdata_find(adata, group);
  mdata->subscribed = true;
  if (!mdata->newsrc_ent)
  {
    mdata->newsrc_ent = MUTT_MEM_CALLOC(1, struct NewsrcEntry);
    mdata->newsrc_len = 1;
    mdata->newsrc_ent[0].first = 1;
    mdata->newsrc_ent[0].last = 0;
  }
  return mdata;
}

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mutt_newsgroup_unsubscribe()

struct NntpMboxData * mutt_newsgroup_unsubscribe	(	struct NntpAccountData *	adata,
		char *	group )

Unsubscribe newsgroup.

Parameters

adata	NNTP server
group	Newsgroup

Return values

ptr	NNTP data
NULL	Error

Definition at line 1205 of file newsrc.c.

{
  if (!adata || !adata->groups_hash || !group || (*group == '\0'))
    return NULL;
 
  struct NntpMboxData *mdata = mutt_hash_find(adata->groups_hash, group);
  if (!mdata)
    return NULL;
 
  mdata->subscribed = false;
  const bool c_save_unsubscribed = cs_subset_bool(NeoMutt->sub, "save_unsubscribed");
  if (!c_save_unsubscribed)
  {
    mdata->newsrc_len = 0;
    FREE(&mdata->newsrc_ent);
  }
  return mdata;
}

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mutt_newsgroup_catchup()

struct NntpMboxData * mutt_newsgroup_catchup	(	struct Mailbox *	m,
		struct NntpAccountData *	adata,
		char *	group )

Catchup newsgroup.

Parameters

m	Mailbox
adata	NNTP server
group	Newsgroup

Return values

ptr	NNTP data
NULL	Error

Definition at line 1232 of file newsrc.c.

{
  if (!adata || !adata->groups_hash || !group || (*group == '\0'))
    return NULL;
 
  struct NntpMboxData *mdata = mutt_hash_find(adata->groups_hash, group);
  if (!mdata)
    return NULL;
 
  if (mdata->newsrc_ent)
  {
    MUTT_MEM_REALLOC(&mdata->newsrc_ent, 1, struct NewsrcEntry);
    mdata->newsrc_len = 1;
    mdata->newsrc_ent[0].first = 1;
    mdata->newsrc_ent[0].last = mdata->last_message;
  }
  mdata->unread = 0;
  if (m && (m->mdata == mdata))
  {
    for (unsigned int i = 0; i < m->msg_count; i++)
    {
      struct Email *e = m->emails[i];
      if (!e)
        break;
      mutt_set_flag(m, e, MUTT_READ, true, true);
    }
  }
  return mdata;
}

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mutt_newsgroup_uncatchup()

struct NntpMboxData * mutt_newsgroup_uncatchup	(	struct Mailbox *	m,
		struct NntpAccountData *	adata,
		char *	group )

Uncatchup newsgroup.

Parameters

m	Mailbox
adata	NNTP server
group	Newsgroup

Return values

ptr	NNTP data
NULL	Error

Definition at line 1271 of file newsrc.c.

{
  if (!adata || !adata->groups_hash || !group || (*group == '\0'))
    return NULL;
 
  struct NntpMboxData *mdata = mutt_hash_find(adata->groups_hash, group);
  if (!mdata)
    return NULL;
 
  if (mdata->newsrc_ent)
  {
    MUTT_MEM_REALLOC(&mdata->newsrc_ent, 1, struct NewsrcEntry);
    mdata->newsrc_len = 1;
    mdata->newsrc_ent[0].first = 1;
    mdata->newsrc_ent[0].last = mdata->first_message - 1;
  }
  if (m && (m->mdata == mdata))
  {
    mdata->unread = m->msg_count;
    for (unsigned int i = 0; i < m->msg_count; i++)
    {
      struct Email *e = m->emails[i];
      if (!e)
        break;
      mutt_set_flag(m, e, MUTT_READ, false, true);
    }
  }
  else
  {
    mdata->unread = mdata->last_message;
    if (mdata->newsrc_ent)
      mdata->unread -= mdata->newsrc_ent[0].last;
  }
  return mdata;
}

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nntp_mailbox()

void nntp_mailbox	(	struct Mailbox *	m,
		char *	buf,
		size_t	buflen )

Get first newsgroup with new messages.

Parameters

m	Mailbox
buf	Buffer for result
buflen	Length of buffer

Definition at line 1314 of file newsrc.c.

{
  if (!m)
    return;
 
  for (unsigned int i = 0; i < CurrentNewsSrv->groups_num; i++)
  {
    struct NntpMboxData *mdata = CurrentNewsSrv->groups_list[i];
 
    if (!mdata || !mdata->subscribed || !mdata->unread)
      continue;
 
    if ((m->type == MUTT_NNTP) &&
        mutt_str_equal(mdata->group, ((struct NntpMboxData *) m->mdata)->group))
    {
      unsigned int unread = 0;
 
      for (unsigned int j = 0; j < m->msg_count; j++)
      {
        struct Email *e = m->emails[j];
        if (!e)
          break;
        if (!e->read && !e->deleted)
          unread++;
      }
      if (unread == 0)
        continue;
    }
    mutt_str_copy(buf, mdata->group, buflen);
    break;
  }
}

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