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pending list fixed;

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This commit is contained in:
Alexander Vdolainen 2026-10-14 23:16:16 +03:00
parent 891010dd13
commit 8f2ec43dca
4 changed files with 91 additions and 14 deletions
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31
include/ilib/misc.h Normal file
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@ -0,0 +1,31 @@
/*
* this 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 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/>.";
*
* (c) Alexander Vdolainen 2007, 2026 <alex@vapaa.xyz>
* subrelay: a minimalistic maillist server based on external IMAPs/SMTPs
*
* misc.h: misc definitions and functions
*
*/
#ifndef __MISC_H__
#define __MISC_H__
/* Some various constants used across the project */
#define PATHLEN_MAX 2048
/* Build time constants */
#define PENDING_ID_LEN 16
#define DEFAULT_PENDING_TTL 86400 /* default TTL for confirmation email */
#endif /* __MISC_H__ */

32
include/ilib/pending.h
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@ -1,23 +1,41 @@
/* pending.h - Pending subscription state tracker using splay tree */
/*
* this 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 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/>.";
*
* (c) Alexander Vdolainen 2007, 2026 <alex@vapaa.xyz>
* subrelay: a minimalistic maillist server based on external IMAPs/SMTPs
*
* pending.h: maintain a pending list of emails
*
*/
#ifndef __PENDING_H__
#define __PENDING_H__
#include <time.h>
#include <ilib/splay.h>
#define PENDING_ID_LEN 16
#include <ilib/misc.h>
typedef struct pending_entry {
splay_node_t node;
char token[PENDING_ID_LEN + 1]; /* Unique hex string token */
char *email; /* Applicant email address */
time_t created_at; /* Unix timestamp for TTL check */
char token[PENDING_ID_LEN + 1];
char *email;
time_t created_at; /* ttl to compare */
} pending_entry_t;
typedef struct pending_pool {
splay_t tree;
char *filepath;
long ttl_seconds; /* Default TTL: e.g., 86400 (24h) */
long ttl_seconds; /* TTL defined for the pending list */
} pending_pool_t;
int pending_pool_init(pending_pool_t *pool, const char *filepath, long ttl_seconds);

3
src/Makefile.am
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@ -8,7 +8,8 @@ noinst_HEADERS = \
$(top_srcdir)/include/ilib/pending.h \
$(top_srcdir)/include/ilib/splay.h \
$(top_srcdir)/include/ilib/subscribers.h \
$(top_srcdir)/include/ilib/template.h
$(top_srcdir)/include/ilib/template.h \
$(top_srcdir)/include/ilib/misc.h
# daemon sources
subrelayd_SOURCES = \

39
src/pending.c
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@ -1,4 +1,25 @@
/* pending.c - Pending subscription tracker implementation */
/*
* this 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 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/>.";
*
* (c) Alexander Vdolainen 2007, 2026 <alex@vapaa.xyz>
* subrelay: a minimalistic maillist server based on external IMAPs/SMTPs
*
* pending.c: maintain a pending list of emails
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -7,6 +28,7 @@
#include <unistd.h>
#include <fcntl.h>
#include <ilib/misc.h>
#include <ilib/pending.h>
/* Case-sensitive token comparator for splay tree */
@ -29,7 +51,7 @@ static char *trim_whitespace(char *str)
return str;
}
/* Generates a secure random 16-character hex token via /dev/urandom */
/* Generates a secure random hex token via /dev/urandom */
static void generate_token(char *buf, size_t len)
{
static const char hex[] = "0123456789abcdef";
@ -38,7 +60,7 @@ static void generate_token(char *buf, size_t len)
int fd = open("/dev/urandom", O_RDONLY);
if (fd >= 0) {
if (read(fd, bytes, sizeof(bytes)) != sizeof(bytes)) {
/* Fallback pseudo-random seeding if read fails */
/* fallback pseudo-random (rand()) seeding if read fails */
for (size_t i = 0; i < sizeof(bytes); i++) bytes[i] = (unsigned char)rand();
}
close(fd);
@ -61,7 +83,8 @@ int pending_pool_init(pending_pool_t *pool, const char *filepath, long ttl_secon
pool->filepath = strdup(filepath);
if (!pool->filepath) return -ENOMEM;
pool->ttl_seconds = (ttl_seconds > 0) ? ttl_seconds : 86400; /* Default 24h */
/* Default is 24h, let's use config for this in the future */
pool->ttl_seconds = (ttl_seconds > 0) ? ttl_seconds : DEFAULT_PENDING_TTL;
return splay_init(&pool->tree, pending_cmp);
}
@ -184,6 +207,10 @@ int pending_load_file(pending_pool_t *pool)
snprintf(entry->token, sizeof(entry->token), "%s", token);
entry->email = strdup(email);
if(!entry->email) {
free(entry);
continue;
}
entry->created_at = created_at;
if (splay_insert(&pool->tree, &entry->node, entry->token) != 0) {
@ -203,13 +230,13 @@ int pending_save_file(pending_pool_t *pool)
pending_purge_expired(pool);
char tmp_path[1024];
char tmp_path[PATHLEN_MAX];
snprintf(tmp_path, sizeof(tmp_path), "%s.tmp.%d", pool->filepath, getpid());
FILE *fp = fopen(tmp_path, "w");
if (!fp) return -errno;
fprintf(fp, "# Subrelay Pending Subscriptions State\n");
fprintf(fp, "# Subrelay list of pending subscriptions emails\n");
fprintf(fp, "# TOKEN TIMESTAMP EMAIL\n\n");
splay_node_t *curr = splay_first(&pool->tree);