From 0b3cbf57875fd692e4ba0b336fefa4bee1ed00dc Mon Sep 17 00:00:00 2001 From: Simeon Simeonov Date: Mon, 26 Feb 2018 11:23:00 +0100 Subject: Initial commit for sylpheed 3.7.0 --- libsylph/pop.c | 927 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 927 insertions(+) create mode 100644 libsylph/pop.c (limited to 'libsylph/pop.c') diff --git a/libsylph/pop.c b/libsylph/pop.c new file mode 100644 index 0000000..8cb7f5c --- /dev/null +++ b/libsylph/pop.c @@ -0,0 +1,927 @@ +/* + * LibSylph -- E-Mail client library + * Copyright (C) 1999-2014 Hiroyuki Yamamoto + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include "defs.h" + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "pop.h" +#include "md5.h" +#include "prefs.h" +#include "prefs_account.h" +#include "utils.h" +#include "recv.h" + +gint pop3_greeting_recv (Pop3Session *session, + const gchar *msg); +gint pop3_getauth_user_send (Pop3Session *session); +gint pop3_getauth_pass_send (Pop3Session *session); +gint pop3_getauth_apop_send (Pop3Session *session); +#if USE_SSL +gint pop3_stls_send (Pop3Session *session); +gint pop3_stls_recv (Pop3Session *session); +#endif +gint pop3_getrange_stat_send (Pop3Session *session); +gint pop3_getrange_stat_recv (Pop3Session *session, + const gchar *msg); +gint pop3_getrange_last_send (Pop3Session *session); +gint pop3_getrange_last_recv (Pop3Session *session, + const gchar *msg); +gint pop3_getrange_uidl_send (Pop3Session *session); +gint pop3_getrange_uidl_recv (Pop3Session *session, + const gchar *data, + guint len); +gint pop3_getsize_list_send (Pop3Session *session); +gint pop3_getsize_list_recv (Pop3Session *session, + const gchar *data, + guint len); +gint pop3_retr_send (Pop3Session *session); +gint pop3_retr_recv (Pop3Session *session, + FILE *fp, + guint len); +gint pop3_delete_send (Pop3Session *session); +gint pop3_delete_recv (Pop3Session *session); +gint pop3_logout_send (Pop3Session *session); + +void pop3_gen_send (Pop3Session *session, + const gchar *format, ...); + +static void pop3_session_destroy (Session *session); + +gint pop3_write_msg_to_file (const gchar *file, + FILE *src_fp, + guint len); + +static Pop3State pop3_lookup_next (Pop3Session *session); + +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_session_recv_data_as_file_finished + (Session *session, + FILE *fp, + guint len); + + +gint pop3_greeting_recv(Pop3Session *session, const gchar *msg) +{ + session->state = POP3_GREETING; + + session->greeting = g_strdup(msg); + return PS_SUCCESS; +} + +#if USE_SSL +gint pop3_stls_send(Pop3Session *session) +{ + session->state = POP3_STLS; + pop3_gen_send(session, "STLS"); + return PS_SUCCESS; +} + +gint pop3_stls_recv(Pop3Session *session) +{ + if (session_start_tls(SESSION(session)) < 0) { + session->error_val = PS_SOCKET; + return PS_SOCKET; + } + return PS_SUCCESS; +} +#endif /* USE_SSL */ + +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; +} + +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; +} + +gint pop3_getauth_apop_send(Pop3Session *session) +{ + gchar *start, *end; + gchar *apop_str; + SMD5 *md5; + gchar *md5sum; + + 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 PS_PROTOCOL; + } + + if ((end = strchr(start, '>')) == NULL || end == start + 1) { + log_warning(_("Timestamp syntax error in greeting\n")); + session->error_val = PS_PROTOCOL; + return PS_PROTOCOL; + } + + *(end + 1) = '\0'; + + if (!is_ascii_str(start) || strchr(start, '@') == NULL) { + log_warning(_("Invalid timestamp in greeting\n")); + session->error_val = PS_PROTOCOL; + return PS_PROTOCOL; + } + + apop_str = g_strconcat(start, session->pass, NULL); + md5 = s_gnet_md5_new((guchar *)apop_str, strlen(apop_str)); + md5sum = s_gnet_md5_get_string(md5); + + pop3_gen_send(session, "APOP %s %s", session->user, md5sum); + + g_free(md5sum); + s_gnet_md5_delete(md5); + g_free(apop_str); + + return PS_SUCCESS; +} + +gint pop3_getrange_stat_send(Pop3Session *session) +{ + session->state = POP3_GETRANGE_STAT; + pop3_gen_send(session, "STAT"); + return PS_SUCCESS; +} + +gint pop3_getrange_stat_recv(Pop3Session *session, const gchar *msg) +{ + if (sscanf(msg, "%d %lld", &session->count, &session->total_bytes) != 2) { + log_warning(_("POP3 protocol error\n")); + session->error_val = PS_PROTOCOL; + return PS_PROTOCOL; + } 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; +} + +gint pop3_getrange_last_send(Pop3Session *session) +{ + session->state = POP3_GETRANGE_LAST; + pop3_gen_send(session, "LAST"); + return PS_SUCCESS; +} + +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 PS_PROTOCOL; + } else { + if (session->count > last) { + session->new_msg_exist = TRUE; + session->cur_msg = last + 1; + } else + session->cur_msg = 0; + } + + return PS_SUCCESS; +} + +gint pop3_getrange_uidl_send(Pop3Session *session) +{ + session->state = POP3_GETRANGE_UIDL; + pop3_gen_send(session, "UIDL"); + return PS_SUCCESS; +} + +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 PS_PROTOCOL; + 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 = GPOINTER_TO_INT(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; +} + +gint pop3_getsize_list_send(Pop3Session *session) +{ + session->state = POP3_GETSIZE_LIST; + pop3_gen_send(session, "LIST"); + return PS_SUCCESS; +} + +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 PS_PROTOCOL; + 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 PS_PROTOCOL; + } + + 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; +} + +gint pop3_retr_send(Pop3Session *session) +{ + session->state = POP3_RETR; + pop3_gen_send(session, "RETR %d", session->cur_msg); + return PS_SUCCESS; +} + +gint pop3_retr_recv(Pop3Session *session, FILE *fp, guint len) +{ + gchar *file; + gint drop_ok; + + file = get_tmp_file(); + if (pop3_write_msg_to_file(file, fp, len) < 0) { + g_free(file); + session->error_val = PS_IOERR; + return PS_IOERR; + } + + drop_ok = session->drop_message(session, file); + g_unlink(file); + g_free(file); + if (drop_ok < 0) { + session->error_val = PS_IOERR; + return PS_IOERR; + } + + 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; +} + +gint pop3_delete_send(Pop3Session *session) +{ + session->state = POP3_DELETE; + pop3_gen_send(session, "DELE %d", session->cur_msg); + return PS_SUCCESS; +} + +gint pop3_delete_recv(Pop3Session *session) +{ + session->msg[session->cur_msg].recv_time = RECV_TIME_DELETE; + session->msg[session->cur_msg].deleted = TRUE; + return PS_SUCCESS; +} + +gint pop3_logout_send(Pop3Session *session) +{ + session->state = POP3_LOGOUT; + pop3_gen_send(session, "QUIT"); + return PS_SUCCESS; +} + +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 (!g_ascii_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)->send_data_finished = NULL; + SESSION(session)->recv_data_finished = pop3_session_recv_data_finished; + SESSION(session)->recv_data_as_file_finished = + pop3_session_recv_data_as_file_finished; + + 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; + + session->user = g_strdup(account->userid); + session->pass = account->passwd ? g_strdup(account->passwd) : + account->tmp_pass ? g_strdup(account->tmp_pass) : NULL; + + SESSION(session)->server = g_strdup(account->recv_server); + +#if USE_SSL + SESSION(session)->port = account->set_popport ? + account->popport : account->ssl_pop == SSL_TUNNEL ? 995 : 110; + SESSION(session)->ssl_type = account->ssl_pop; + if (account->ssl_pop != SSL_NONE) + SESSION(session)->nonblocking = account->use_nonblocking_ssl; +#else + SESSION(session)->port = account->set_popport ? account->popport : 110; +#endif + + 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; + gchar *uid; + + table = g_hash_table_new(g_str_hash, g_str_equal); + + uid = uriencode_for_filename(ac_prefs->userid); + path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, + UIDL_DIR, G_DIR_SEPARATOR_S, ac_prefs->recv_server, + "-", uid, NULL); + g_free(uid); + if ((fp = g_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; + PrefFile *pfile; + Pop3MsgInfo *msg; + gint n; + gchar *uid; + + if (!session->uidl_is_valid) return 0; + + uid = uriencode_for_filename(session->ac_prefs->userid); + path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, + UIDL_DIR, G_DIR_SEPARATOR_S, + session->ac_prefs->recv_server, + "-", uid, NULL); + g_free(uid); + if ((pfile = prefs_file_open(path)) == NULL) { + g_free(path); + return -1; + } + prefs_file_set_backup_generation(pfile, 0); + + for (n = 1; n <= session->count; n++) { + msg = &session->msg[n]; + if (!msg->uidl || !msg->received) + continue; + if (session->state == POP3_DONE && msg->deleted) + continue; + fprintf(pfile->fp, "%s\t%ld\n", msg->uidl, msg->recv_time); + } + + if (prefs_file_close(pfile) < 0) + g_warning("%s: failed to write UIDL list.\n", path); + + g_free(path); + + return 0; +} + +gint pop3_write_msg_to_file(const gchar *file, FILE *src_fp, guint len) +{ + FILE *fp; + gchar buf[BUFFSIZE]; + gchar last_ch = '\0'; + + g_return_val_if_fail(file != NULL, -1); + + if ((fp = g_fopen(file, "wb")) == NULL) { + FILE_OP_ERROR(file, "fopen"); + return -1; + } + + if (change_file_mode_rw(fp, file) < 0) + FILE_OP_ERROR(file, "chmod"); + + while (fgets(buf, sizeof(buf), src_fp) != NULL) { + gchar *p = buf; + gint len; + + len = strlen(buf); + if (len > 0) { + last_ch = buf[len - 1]; + if (last_ch == '\n' && len > 1 && + buf[len - 2] == '\r') { + buf[len - 2] = '\n'; + buf[len - 1] = '\0'; + } else if (last_ch == '\r') + buf[len - 1] = '\0'; + } else + last_ch = '\0'; + + if ((last_ch == '\0' || last_ch == '\n') && + *p == '.' && *(p + 1) == '.') + p++; + + if (fputs(p, fp) == EOF) { + FILE_OP_ERROR(file, "fputs"); + g_warning("can't write to file: %s\n", file); + fclose(fp); + g_unlink(file); + return -1; + } + } + + if (ferror(src_fp)) { + FILE_OP_ERROR(file, "fgets"); + fclose(fp); + g_unlink(file); + return -1; + } + + if (fclose(fp) == EOF) { + FILE_OP_ERROR(file, "fclose"); + g_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); + session->cur_total_bytes += size; + pop3_delete_send(session); + return POP3_DELETE; + } + + if (size_limit_over && !msg->received) { + log_print + (_("POP3: Skipping message %d (%d bytes)\n"), + session->cur_msg, size); + session->skipped_num++; + } + + 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; +} + +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; + + /* don't overwrite previous error on logout */ + if (session->state != POP3_LOGOUT) + session->error_val = ok; + + return ok; +} + +static gint pop3_session_recv_msg(Session *session, const gchar *msg) +{ + Pop3Session *pop3_session = POP3_SESSION(session); + gint val = PS_SUCCESS; + const gchar *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_SOCKET) { + pop3_session->state = POP3_ERROR; + return -1; + } + if (val != PS_NOTSUPPORTED) { + if (pop3_session->state != POP3_LOGOUT) { + if (pop3_logout_send(pop3_session) == PS_SUCCESS) + return 0; + else + return -1; + } + } + } + + if (*body == '+' || *body == '-') + body++; + while (g_ascii_isalpha(*body)) + body++; + while (g_ascii_isspace(*body)) + body++; + } + + switch (pop3_session->state) { + case POP3_READY: + case POP3_GREETING: + val = pop3_greeting_recv(pop3_session, body); +#if USE_SSL + if (pop3_session->ac_prefs->ssl_pop == SSL_STARTTLS) + val = pop3_stls_send(pop3_session); + else +#endif + if (pop3_session->ac_prefs->use_apop_auth) + val = pop3_getauth_apop_send(pop3_session); + else + val = pop3_getauth_user_send(pop3_session); + break; +#if USE_SSL + case POP3_STLS: + if ((val = pop3_stls_recv(pop3_session)) != PS_SUCCESS) + return -1; + if (pop3_session->ac_prefs->use_apop_auth) + val = pop3_getauth_apop_send(pop3_session); + else + val = pop3_getauth_user_send(pop3_session); + break; +#endif + case POP3_GETAUTH_USER: + val = pop3_getauth_pass_send(pop3_session); + break; + case POP3_GETAUTH_PASS: + case POP3_GETAUTH_APOP: + if (pop3_session->auth_only) + val = pop3_logout_send(pop3_session); + else + val = pop3_getrange_stat_send(pop3_session); + break; + case POP3_GETRANGE_STAT: + if ((val = pop3_getrange_stat_recv(pop3_session, body)) != PS_SUCCESS) + return -1; + if (pop3_session->count > 0) + val = pop3_getrange_uidl_send(pop3_session); + else + val = pop3_logout_send(pop3_session); + break; + case POP3_GETRANGE_LAST: + if (val == PS_NOTSUPPORTED) + pop3_session->error_val = PS_SUCCESS; + else if ((val = pop3_getrange_last_recv + (pop3_session, body)) != PS_SUCCESS) + return -1; + if (pop3_session->cur_msg > 0) + val = pop3_getsize_list_send(pop3_session); + else + val = pop3_logout_send(pop3_session); + break; + case POP3_GETRANGE_UIDL: + if (val == PS_NOTSUPPORTED) { + pop3_session->error_val = PS_SUCCESS; + val = pop3_getrange_last_send(pop3_session); + } else { + pop3_session->state = POP3_GETRANGE_UIDL_RECV; + val = session_recv_data(session, 0, ".\r\n"); + } + break; + case POP3_GETSIZE_LIST: + pop3_session->state = POP3_GETSIZE_LIST_RECV; + val = session_recv_data(session, 0, ".\r\n"); + break; + case POP3_RETR: + pop3_session->state = POP3_RETR_RECV; + val = session_recv_data_as_file(session, 0, ".\r\n"); + break; + case POP3_DELETE: + val = pop3_delete_recv(pop3_session); + if (pop3_session->cur_msg == pop3_session->count) + val = pop3_logout_send(pop3_session); + else { + pop3_session->cur_msg++; + if (pop3_lookup_next(pop3_session) == POP3_ERROR) + return -1; + } + break; + case POP3_LOGOUT: + if (val == PS_SUCCESS) + pop3_session->state = POP3_DONE; + else + pop3_session->state = POP3_ERROR; + session_disconnect(session); + break; + case POP3_ERROR: + default: + return -1; + } + + if (val == PS_SUCCESS) + return 0; + else + return -1; +} + +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, (gchar *)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, (gchar *)data, len); + if (val == PS_SUCCESS) { + if (pop3_lookup_next(pop3_session) == POP3_ERROR) + return -1; + } else + return -1; + break; + case POP3_ERROR: + default: + return -1; + } + + return 0; +} + +static gint pop3_session_recv_data_as_file_finished(Session *session, FILE *fp, + guint len) +{ + Pop3Session *pop3_session = POP3_SESSION(session); + + g_return_val_if_fail(pop3_session->state == POP3_RETR_RECV, -1); + + if (pop3_retr_recv(pop3_session, fp, len) != PS_SUCCESS) + return -1; + + /* disconnected? */ + if (!session->sock) + 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; + } + + return 0; +} -- cgit v1.3