diff options
Diffstat (limited to 'src/pop.c')
| -rw-r--r-- | src/pop.c | 862 |
1 files changed, 862 insertions, 0 deletions
diff --git a/src/pop.c b/src/pop.c new file mode 100644 index 00000000..483a076f --- /dev/null +++ b/src/pop.c @@ -0,0 +1,862 @@ +/* + * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client + * Copyright (C) 1999-2004 Hiroyuki Yamamoto + * + * 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, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <glib.h> +#include <stdio.h> +#include <string.h> +#include <stdarg.h> +#include <ctype.h> +#include <unistd.h> +#include <time.h> +#include <errno.h> + +#include "intl.h" +#include "pop.h" +#include "md5.h" +#include "prefs_account.h" +#include "utils.h" +#include "recv.h" + +static gint pop3_greeting_recv (Pop3Session *session, + const gchar *msg); +static gint pop3_getauth_user_send (Pop3Session *session); +static gint pop3_getauth_pass_send (Pop3Session *session); +static gint pop3_getauth_apop_send (Pop3Session *session); +#if USE_SSL +static gint pop3_stls_send (Pop3Session *session); +static gint pop3_stls_recv (Pop3Session *session); +#endif +static gint pop3_getrange_stat_send (Pop3Session *session); +static gint pop3_getrange_stat_recv (Pop3Session *session, + const gchar *msg); +static gint pop3_getrange_last_send (Pop3Session *session); +static gint pop3_getrange_last_recv (Pop3Session *session, + const gchar *msg); +static gint pop3_getrange_uidl_send (Pop3Session *session); +static gint pop3_getrange_uidl_recv (Pop3Session *session, + const gchar *data, + guint len); +static gint pop3_getsize_list_send (Pop3Session *session); +static gint pop3_getsize_list_recv (Pop3Session *session, + const gchar *data, + guint len); +static gint pop3_retr_send (Pop3Session *session); +static gint pop3_retr_recv (Pop3Session *session, + const gchar *data, + guint len); +static gint pop3_delete_send (Pop3Session *session); +static gint pop3_delete_recv (Pop3Session *session); +static gint pop3_logout_send (Pop3Session *session); + +static void pop3_gen_send (Pop3Session *session, + const gchar *format, ...); + +static void pop3_session_destroy (Session *session); + +static gint pop3_write_msg_to_file (const gchar *file, + const gchar *data, + guint len); + +static Pop3State pop3_lookup_next (Pop3Session *session); +static Pop3ErrorValue pop3_ok (Pop3Session *session, + const gchar *msg); + +static gint pop3_session_recv_msg (Session *session, + const gchar *msg); +static gint pop3_session_recv_data_finished (Session *session, + guchar *data, + guint len); + + +static gint pop3_greeting_recv(Pop3Session *session, const gchar *msg) +{ + session->state = POP3_GREETING; + + session->greeting = g_strdup(msg); + return PS_SUCCESS; +} + +#if USE_SSL +static gint pop3_stls_send(Pop3Session *session) +{ + session->state = POP3_STLS; + pop3_gen_send(session, "STLS"); + return PS_SUCCESS; +} + +static gint pop3_stls_recv(Pop3Session *session) +{ + if (session_start_tls(SESSION(session)) < 0) { + session->error_val = PS_SOCKET; + return -1; + } + return PS_SUCCESS; +} +#endif /* USE_SSL */ + +static gint pop3_getauth_user_send(Pop3Session *session) +{ + g_return_val_if_fail(session->user != NULL, -1); + + session->state = POP3_GETAUTH_USER; + pop3_gen_send(session, "USER %s", session->user); + return PS_SUCCESS; +} + +static gint pop3_getauth_pass_send(Pop3Session *session) +{ + g_return_val_if_fail(session->pass != NULL, -1); + + session->state = POP3_GETAUTH_PASS; + pop3_gen_send(session, "PASS %s", session->pass); + return PS_SUCCESS; +} + +static gint pop3_getauth_apop_send(Pop3Session *session) +{ + gchar *start, *end; + gchar *apop_str; + gchar md5sum[33]; + + g_return_val_if_fail(session->user != NULL, -1); + g_return_val_if_fail(session->pass != NULL, -1); + + session->state = POP3_GETAUTH_APOP; + + if ((start = strchr(session->greeting, '<')) == NULL) { + log_warning(_("Required APOP timestamp not found " + "in greeting\n")); + session->error_val = PS_PROTOCOL; + return -1; + } + + if ((end = strchr(start, '>')) == NULL || end == start + 1) { + log_warning(_("Timestamp syntax error in greeting\n")); + session->error_val = PS_PROTOCOL; + return -1; + } + + *(end + 1) = '\0'; + + apop_str = g_strconcat(start, session->pass, NULL); + md5_hex_digest(md5sum, apop_str); + g_free(apop_str); + + pop3_gen_send(session, "APOP %s %s", session->user, md5sum); + + return PS_SUCCESS; +} + +static gint pop3_getrange_stat_send(Pop3Session *session) +{ + session->state = POP3_GETRANGE_STAT; + pop3_gen_send(session, "STAT"); + return PS_SUCCESS; +} + +static gint pop3_getrange_stat_recv(Pop3Session *session, const gchar *msg) +{ + if (sscanf(msg, "%d %d", &session->count, &session->total_bytes) != 2) { + log_warning(_("POP3 protocol error\n")); + session->error_val = PS_PROTOCOL; + return -1; + } else { + if (session->count == 0) { + session->uidl_is_valid = TRUE; + } else { + session->msg = g_new0(Pop3MsgInfo, session->count + 1); + session->cur_msg = 1; + } + } + + return PS_SUCCESS; +} + +static gint pop3_getrange_last_send(Pop3Session *session) +{ + session->state = POP3_GETRANGE_LAST; + pop3_gen_send(session, "LAST"); + return PS_SUCCESS; +} + +static gint pop3_getrange_last_recv(Pop3Session *session, const gchar *msg) +{ + gint last; + + if (sscanf(msg, "%d", &last) == 0) { + log_warning(_("POP3 protocol error\n")); + session->error_val = PS_PROTOCOL; + return -1; + } else { + if (session->count > last) { + session->new_msg_exist = TRUE; + session->cur_msg = last + 1; + } else + session->cur_msg = 0; + } + + return PS_SUCCESS; +} + +static gint pop3_getrange_uidl_send(Pop3Session *session) +{ + session->state = POP3_GETRANGE_UIDL; + pop3_gen_send(session, "UIDL"); + return PS_SUCCESS; +} + +static gint pop3_getrange_uidl_recv(Pop3Session *session, const gchar *data, + guint len) +{ + gchar id[IDLEN + 1]; + gchar buf[POPBUFSIZE]; + gint buf_len; + gint num; + time_t recv_time; + const gchar *p = data; + const gchar *lastp = data + len; + const gchar *newline; + + while (p < lastp) { + if ((newline = memchr(p, '\r', lastp - p)) == NULL) + return -1; + buf_len = MIN(newline - p, sizeof(buf) - 1); + memcpy(buf, p, buf_len); + buf[buf_len] = '\0'; + + p = newline + 1; + if (p < lastp && *p == '\n') p++; + + if (sscanf(buf, "%d %" Xstr(IDLEN) "s", &num, id) != 2 || + num <= 0 || num > session->count) { + log_warning(_("invalid UIDL response: %s\n"), buf); + continue; + } + + session->msg[num].uidl = g_strdup(id); + + recv_time = (time_t)g_hash_table_lookup(session->uidl_table, id); + session->msg[num].recv_time = recv_time; + + if (!session->ac_prefs->getall && recv_time != RECV_TIME_NONE) + session->msg[num].received = TRUE; + + if (!session->new_msg_exist && + (session->ac_prefs->getall || recv_time == RECV_TIME_NONE || + session->ac_prefs->rmmail)) { + session->cur_msg = num; + session->new_msg_exist = TRUE; + } + } + + session->uidl_is_valid = TRUE; + return PS_SUCCESS; +} + +static gint pop3_getsize_list_send(Pop3Session *session) +{ + session->state = POP3_GETSIZE_LIST; + pop3_gen_send(session, "LIST"); + return PS_SUCCESS; +} + +static gint pop3_getsize_list_recv(Pop3Session *session, const gchar *data, + guint len) +{ + gchar buf[POPBUFSIZE]; + gint buf_len; + guint num, size; + const gchar *p = data; + const gchar *lastp = data + len; + const gchar *newline; + + while (p < lastp) { + if ((newline = memchr(p, '\r', lastp - p)) == NULL) + return -1; + buf_len = MIN(newline - p, sizeof(buf) - 1); + memcpy(buf, p, buf_len); + buf[buf_len] = '\0'; + + p = newline + 1; + if (p < lastp && *p == '\n') p++; + + if (sscanf(buf, "%u %u", &num, &size) != 2) { + session->error_val = PS_PROTOCOL; + return -1; + } + + if (num > 0 && num <= session->count) + session->msg[num].size = size; + if (num > 0 && num < session->cur_msg) + session->cur_total_bytes += size; + } + + return PS_SUCCESS; +} + +static gint pop3_retr_send(Pop3Session *session) +{ + session->state = POP3_RETR; + pop3_gen_send(session, "RETR %d", session->cur_msg); + return PS_SUCCESS; +} + +static gint pop3_retr_recv(Pop3Session *session, const gchar *data, guint len) +{ + gchar *file; + gint drop_ok; + + file = get_tmp_file(); + if (pop3_write_msg_to_file(file, data, len) < 0) { + g_free(file); + session->error_val = PS_IOERR; + return -1; + } + + drop_ok = session->drop_message(session, file); + unlink(file); + g_free(file); + if (drop_ok < 0) { + session->error_val = PS_IOERR; + return -1; + } + + session->cur_total_bytes += session->msg[session->cur_msg].size; + session->cur_total_recv_bytes += session->msg[session->cur_msg].size; + session->cur_total_num++; + + session->msg[session->cur_msg].received = TRUE; + session->msg[session->cur_msg].recv_time = + drop_ok == DROP_DONT_RECEIVE ? RECV_TIME_KEEP + : drop_ok == DROP_DELETE ? RECV_TIME_DELETE + : session->current_time; + + return PS_SUCCESS; +} + +static gint pop3_delete_send(Pop3Session *session) +{ + session->state = POP3_DELETE; + pop3_gen_send(session, "DELE %d", session->cur_msg); + return PS_SUCCESS; +} + +static gint pop3_delete_recv(Pop3Session *session) +{ + session->msg[session->cur_msg].deleted = TRUE; + return PS_SUCCESS; +} + +static gint pop3_logout_send(Pop3Session *session) +{ + session->state = POP3_LOGOUT; + pop3_gen_send(session, "QUIT"); + return PS_SUCCESS; +} + +static void pop3_gen_send(Pop3Session *session, const gchar *format, ...) +{ + gchar buf[POPBUFSIZE + 1]; + va_list args; + + va_start(args, format); + g_vsnprintf(buf, sizeof(buf) - 2, format, args); + va_end(args); + + if (!strncasecmp(buf, "PASS ", 5)) + log_print("POP3> PASS ********\n"); + else + log_print("POP3> %s\n", buf); + + session_send_msg(SESSION(session), SESSION_MSG_NORMAL, buf); +} + +Session *pop3_session_new(PrefsAccount *account) +{ + Pop3Session *session; + + g_return_val_if_fail(account != NULL, NULL); + + session = g_new0(Pop3Session, 1); + + session_init(SESSION(session)); + + SESSION(session)->type = SESSION_POP3; + + SESSION(session)->recv_msg = pop3_session_recv_msg; + SESSION(session)->recv_data_finished = pop3_session_recv_data_finished; + SESSION(session)->send_data_finished = NULL; + + SESSION(session)->destroy = pop3_session_destroy; + + session->state = POP3_READY; + session->ac_prefs = account; + session->uidl_table = pop3_get_uidl_table(account); + session->current_time = time(NULL); + session->error_val = PS_SUCCESS; + session->error_msg = NULL; + + return SESSION(session); +} + +static void pop3_session_destroy(Session *session) +{ + Pop3Session *pop3_session = POP3_SESSION(session); + gint n; + + g_return_if_fail(session != NULL); + + for (n = 1; n <= pop3_session->count; n++) + g_free(pop3_session->msg[n].uidl); + g_free(pop3_session->msg); + + if (pop3_session->uidl_table) { + hash_free_strings(pop3_session->uidl_table); + g_hash_table_destroy(pop3_session->uidl_table); + } + + g_free(pop3_session->greeting); + g_free(pop3_session->user); + g_free(pop3_session->pass); + g_free(pop3_session->error_msg); +} + +GHashTable *pop3_get_uidl_table(PrefsAccount *ac_prefs) +{ + GHashTable *table; + gchar *path; + FILE *fp; + gchar buf[POPBUFSIZE]; + gchar uidl[POPBUFSIZE]; + time_t recv_time; + time_t now; + + table = g_hash_table_new(g_str_hash, g_str_equal); + + path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, + "uidl", G_DIR_SEPARATOR_S, ac_prefs->recv_server, + "-", ac_prefs->userid, NULL); + if ((fp = fopen(path, "rb")) == NULL) { + if (ENOENT != errno) FILE_OP_ERROR(path, "fopen"); + g_free(path); + path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, + "uidl-", ac_prefs->recv_server, + "-", ac_prefs->userid, NULL); + if ((fp = fopen(path, "rb")) == NULL) { + if (ENOENT != errno) FILE_OP_ERROR(path, "fopen"); + g_free(path); + return table; + } + } + g_free(path); + + now = time(NULL); + + while (fgets(buf, sizeof(buf), fp) != NULL) { + strretchomp(buf); + recv_time = RECV_TIME_NONE; + if (sscanf(buf, "%s\t%ld", uidl, &recv_time) != 2) { + if (sscanf(buf, "%s", uidl) != 1) + continue; + else + recv_time = now; + } + if (recv_time == RECV_TIME_NONE) + recv_time = RECV_TIME_RECEIVED; + g_hash_table_insert(table, g_strdup(uidl), + GINT_TO_POINTER(recv_time)); + } + + fclose(fp); + return table; +} + +gint pop3_write_uidl_list(Pop3Session *session) +{ + gchar *path; + FILE *fp; + Pop3MsgInfo *msg; + gint n; + + if (!session->uidl_is_valid) return 0; + + path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, + "uidl", G_DIR_SEPARATOR_S, + session->ac_prefs->recv_server, + "-", session->ac_prefs->userid, NULL); + if ((fp = fopen(path, "wb")) == NULL) { + FILE_OP_ERROR(path, "fopen"); + g_free(path); + return -1; + } + + for (n = 1; n <= session->count; n++) { + msg = &session->msg[n]; + if (msg->uidl && msg->received && !msg->deleted) + fprintf(fp, "%s\t%ld\n", msg->uidl, msg->recv_time); + } + + if (fclose(fp) == EOF) FILE_OP_ERROR(path, "fclose"); + g_free(path); + + return 0; +} + +static gint pop3_write_msg_to_file(const gchar *file, const gchar *data, + guint len) +{ + FILE *fp; + const gchar *prev, *cur; + + g_return_val_if_fail(file != NULL, -1); + + if ((fp = fopen(file, "wb")) == NULL) { + FILE_OP_ERROR(file, "fopen"); + return -1; + } + + if (change_file_mode_rw(fp, file) < 0) + FILE_OP_ERROR(file, "chmod"); + + /* +------------------+----------------+--------------------------+ * + * ^data ^prev ^cur data+len-1^ */ + + prev = data; + while ((cur = (gchar *)my_memmem(prev, len - (prev - data), "\r\n", 2)) + != NULL) { + if ((cur > prev && fwrite(prev, cur - prev, 1, fp) < 1) || + fputc('\n', fp) == EOF) { + FILE_OP_ERROR(file, "fwrite"); + g_warning("can't write to file: %s\n", file); + fclose(fp); + unlink(file); + return -1; + } + + if (cur == data + len - 1) { + prev = cur + 1; + break; + } + + if (*(cur + 1) == '\n') + prev = cur + 2; + else + prev = cur + 1; + + if (prev - data < len - 1 && *prev == '.' && *(prev + 1) == '.') + prev++; + + if (prev - data >= len) + break; + } + + if (prev - data < len && + fwrite(prev, len - (prev - data), 1, fp) < 1) { + FILE_OP_ERROR(file, "fwrite"); + g_warning("can't write to file: %s\n", file); + fclose(fp); + unlink(file); + return -1; + } + if (data[len - 1] != '\r' && data[len - 1] != '\n') { + if (fputc('\n', fp) == EOF) { + FILE_OP_ERROR(file, "fputc"); + g_warning("can't write to file: %s\n", file); + fclose(fp); + unlink(file); + return -1; + } + } + + if (fclose(fp) == EOF) { + FILE_OP_ERROR(file, "fclose"); + unlink(file); + return -1; + } + + return 0; +} + +static Pop3State pop3_lookup_next(Pop3Session *session) +{ + Pop3MsgInfo *msg; + PrefsAccount *ac = session->ac_prefs; + gint size; + gboolean size_limit_over; + + for (;;) { + msg = &session->msg[session->cur_msg]; + size = msg->size; + size_limit_over = + (ac->enable_size_limit && + ac->size_limit > 0 && + size > ac->size_limit * 1024); + + if (msg->recv_time == RECV_TIME_DELETE || + (ac->rmmail && + msg->recv_time != RECV_TIME_NONE && + msg->recv_time != RECV_TIME_KEEP && + session->current_time - msg->recv_time >= + ac->msg_leave_time * 24 * 60 * 60)) { + log_print(_("POP3: Deleting expired message %d\n"), + session->cur_msg); + pop3_delete_send(session); + return POP3_DELETE; + } + + if (size_limit_over) + log_print + (_("POP3: Skipping message %d (%d bytes)\n"), + session->cur_msg, size); + + if (size == 0 || msg->received || size_limit_over) { + session->cur_total_bytes += size; + if (session->cur_msg == session->count) { + pop3_logout_send(session); + return POP3_LOGOUT; + } else + session->cur_msg++; + } else + break; + } + + pop3_retr_send(session); + return POP3_RETR; +} + +static Pop3ErrorValue pop3_ok(Pop3Session *session, const gchar *msg) +{ + Pop3ErrorValue ok; + + log_print("POP3< %s\n", msg); + + if (!strncmp(msg, "+OK", 3)) + ok = PS_SUCCESS; + else if (!strncmp(msg, "-ERR", 4)) { + if (strstr(msg + 4, "lock") || + strstr(msg + 4, "Lock") || + strstr(msg + 4, "LOCK") || + strstr(msg + 4, "wait")) { + log_warning(_("mailbox is locked\n")); + ok = PS_LOCKBUSY; + } else if (strcasestr(msg + 4, "timeout")) { + log_warning(_("session timeout\n")); + ok = PS_ERROR; + } else { + switch (session->state) { +#if USE_SSL + case POP3_STLS: + log_warning(_("can't start TLS session\n")); + ok = PS_ERROR; + break; +#endif + case POP3_GETAUTH_USER: + case POP3_GETAUTH_PASS: + case POP3_GETAUTH_APOP: + log_warning(_("error occurred on authentication\n")); + ok = PS_AUTHFAIL; + break; + case POP3_GETRANGE_LAST: + case POP3_GETRANGE_UIDL: + log_warning(_("command not supported\n")); + ok = PS_NOTSUPPORTED; + break; + default: + log_warning(_("error occurred on POP3 session\n")); + ok = PS_ERROR; + } + } + + g_free(session->error_msg); + session->error_msg = g_strdup(msg); + fprintf(stderr, "POP3: %s\n", msg); + } else + ok = PS_PROTOCOL; + + session->error_val = ok; + return ok; +} + +static gint pop3_session_recv_msg(Session *session, const gchar *msg) +{ + Pop3Session *pop3_session = POP3_SESSION(session); + Pop3ErrorValue val = PS_SUCCESS; + const guchar *body; + + body = msg; + if (pop3_session->state != POP3_GETRANGE_UIDL_RECV && + pop3_session->state != POP3_GETSIZE_LIST_RECV) { + val = pop3_ok(pop3_session, msg); + if (val != PS_SUCCESS) { + if (val != PS_NOTSUPPORTED) { + pop3_session->state = POP3_ERROR; + return -1; + } + } + + if (*body == '+' || *body == '-') + body++; + while (isalpha(*body)) + body++; + while (isspace(*body)) + body++; + } + + switch (pop3_session->state) { + case POP3_READY: + case POP3_GREETING: + pop3_greeting_recv(pop3_session, body); +#if USE_SSL + if (pop3_session->ac_prefs->ssl_pop == SSL_STARTTLS) + pop3_stls_send(pop3_session); + else +#endif + if (pop3_session->ac_prefs->use_apop_auth) + pop3_getauth_apop_send(pop3_session); + else + pop3_getauth_user_send(pop3_session); + break; +#if USE_SSL + case POP3_STLS: + if (pop3_stls_recv(pop3_session) != PS_SUCCESS) + return -1; + if (pop3_session->ac_prefs->use_apop_auth) + pop3_getauth_apop_send(pop3_session); + else + pop3_getauth_user_send(pop3_session); + break; +#endif + case POP3_GETAUTH_USER: + pop3_getauth_pass_send(pop3_session); + break; + case POP3_GETAUTH_PASS: + case POP3_GETAUTH_APOP: + pop3_getrange_stat_send(pop3_session); + break; + case POP3_GETRANGE_STAT: + if (pop3_getrange_stat_recv(pop3_session, body) < 0) + return -1; + if (pop3_session->count > 0) + pop3_getrange_uidl_send(pop3_session); + else + pop3_logout_send(pop3_session); + break; + case POP3_GETRANGE_LAST: + if (val == PS_NOTSUPPORTED) + pop3_session->error_val = PS_SUCCESS; + else if (pop3_getrange_last_recv(pop3_session, body) < 0) + return -1; + if (pop3_session->cur_msg > 0) + pop3_getsize_list_send(pop3_session); + else + pop3_logout_send(pop3_session); + break; + case POP3_GETRANGE_UIDL: + if (val == PS_NOTSUPPORTED) { + pop3_session->error_val = PS_SUCCESS; + pop3_getrange_last_send(pop3_session); + } else { + pop3_session->state = POP3_GETRANGE_UIDL_RECV; + session_recv_data(session, 0, ".\r\n"); + } + break; + case POP3_GETSIZE_LIST: + pop3_session->state = POP3_GETSIZE_LIST_RECV; + session_recv_data(session, 0, ".\r\n"); + break; + case POP3_RETR: + pop3_session->state = POP3_RETR_RECV; + session_recv_data(session, 0, ".\r\n"); + break; + case POP3_DELETE: + pop3_delete_recv(pop3_session); + if (pop3_session->cur_msg == pop3_session->count) + pop3_logout_send(pop3_session); + else { + pop3_session->cur_msg++; + if (pop3_lookup_next(pop3_session) == POP3_ERROR) + return -1; + } + break; + case POP3_LOGOUT: + session_disconnect(session); + break; + case POP3_ERROR: + default: + return -1; + } + + return 0; +} + +static gint pop3_session_recv_data_finished(Session *session, guchar *data, + guint len) +{ + Pop3Session *pop3_session = POP3_SESSION(session); + Pop3ErrorValue val = PS_SUCCESS; + + switch (pop3_session->state) { + case POP3_GETRANGE_UIDL_RECV: + val = pop3_getrange_uidl_recv(pop3_session, data, len); + if (val == PS_SUCCESS) { + if (pop3_session->new_msg_exist) + pop3_getsize_list_send(pop3_session); + else + pop3_logout_send(pop3_session); + } else + return -1; + break; + case POP3_GETSIZE_LIST_RECV: + val = pop3_getsize_list_recv(pop3_session, data, len); + if (val == PS_SUCCESS) { + if (pop3_lookup_next(pop3_session) == POP3_ERROR) + return -1; + } else + return -1; + break; + case POP3_RETR_RECV: + if (pop3_retr_recv(pop3_session, data, len) < 0) + return -1; + + if (pop3_session->msg[pop3_session->cur_msg].recv_time + == RECV_TIME_DELETE || + (pop3_session->ac_prefs->rmmail && + pop3_session->ac_prefs->msg_leave_time == 0 && + pop3_session->msg[pop3_session->cur_msg].recv_time + != RECV_TIME_KEEP)) + pop3_delete_send(pop3_session); + else if (pop3_session->cur_msg == pop3_session->count) + pop3_logout_send(pop3_session); + else { + pop3_session->cur_msg++; + if (pop3_lookup_next(pop3_session) == POP3_ERROR) + return -1; + } + break; + case POP3_ERROR: + default: + return -1; + } + + return 0; +} |