+++ /dev/null
-/*
- * Copyright notice from original mutt:
- * Copyright (C) 2000-2002 Vsevolod Volkov <vvv@mutt.org.ua>
- *
- * This file is part of mutt-ng, see http://www.muttng.org/.
- * It's licensed under the GNU General Public License,
- * please see the file GPL in the top level source directory.
- */
-
-#include <lib-lib/lib-lib.h>
-
-#include <sasl/sasl.h>
-#include <sasl/saslutil.h>
-
-#include <lib-sys/mutt_socket.h>
-#include <lib-ui/lib-ui.h>
-
-#include "crypt.h"
-#include "mutt.h"
-#include "mutt_sasl.h"
-#include "pop.h"
-
-#define POP_PORT 110
-#define POP_SSL_PORT 995
-#define POP_CACHE_LEN 10
-/* maximal length of the server response (RFC1939) */
-#define POP_CMD_RESPONSE 512
-
-enum {
- /* Status */
- POP_NONE = 0,
- POP_CONNECTED,
- POP_DISCONNECTED,
- POP_BYE
-};
-
-typedef enum {
- POP_A_SUCCESS = 0,
- POP_A_SOCKET,
- POP_A_FAILURE,
- POP_A_UNAVAIL
-} pop_auth_res_t;
-
-typedef struct {
- int index;
- char *path;
-} POP_CACHE;
-
-typedef enum {
- /* pop_fetch_data uses pop_query_status and this return value */
- PFD_FUNCT_ERROR = -3,
- PQ_ERR = -2,
- PQ_NOT_CONNECTED = -1,
- PQ_OK = 0
-} pop_query_status;
-
-typedef enum {
- CMD_NOT_AVAILABLE = 0,
- CMD_AVAILABLE,
- CMD_UNKNOWN /* unknown whether it is available or not */
-} cmd_status;
-
-typedef struct {
- CONNECTION *conn;
-
- unsigned status : 2;
- unsigned capabilities : 1;
- unsigned use_stls : 2;
- cmd_status cmd_capa : 2; /* optional command CAPA */
- cmd_status cmd_stls : 2; /* optional command STLS */
- cmd_status cmd_uidl : 2; /* optional command UIDL */
- cmd_status cmd_top : 2; /* optional command TOP */
- cmd_status cmd_user : 2; /* optional command USER */
- unsigned resp_codes : 1; /* server supports extended response codes */
- unsigned expire : 1; /* expire is greater than 0 */
- unsigned clear_cache : 1;
-
- ssize_t size;
- time_t check_time;
- char *auth_list; /* list of auth mechanisms */
- char *timestamp;
- char err_msg[POP_CMD_RESPONSE];
- POP_CACHE cache[POP_CACHE_LEN];
-} pop_data_t;
-
-/* pop low level functions {{{ */
-
-static void pop_error(pop_data_t *pop_data, const char *msg)
-{
- if (!m_strncmp(msg, "-ERR ", 5)) {
- const char *s = skipspaces(msg + 5);
- if (*s)
- msg = s;
- }
-
- m_strcat(pop_data->err_msg, sizeof(pop_data->err_msg), msg);
- m_strrtrim(pop_data->err_msg);
-}
-
-/*
- * Send data from buffer and receive answer to the same buffer
- * 0 - successful,
- * -1 - conection lost,
- * -2 - invalid command or execution error.
-*/
-static pop_query_status _pop_query(pop_data_t *pop_data, char *buf, ssize_t buflen)
-{
- if (pop_data->status != POP_CONNECTED)
- return PQ_NOT_CONNECTED;
-
- mutt_socket_write(pop_data->conn, buf);
- snprintf(pop_data->err_msg, sizeof(pop_data->err_msg), "%.*s: ",
- (int)(strpbrk(buf, " \r\n") - buf), buf);
-
- if (mutt_socket_readln(buf, buflen, pop_data->conn) < 0) {
- pop_data->status = POP_DISCONNECTED;
- return PQ_NOT_CONNECTED;
- }
- if (!m_strncmp(buf, "+OK", 3))
- return PQ_OK;
-
- pop_error(pop_data, buf);
- return PQ_ERR;
-}
-#define pop_query(pd, b, l, fmt, ...) \
- (snprintf(b, l, fmt "\r\n", ##__VA_ARGS__), _pop_query(pd, b, l))
-
-/*
- * Open connection
- * 0 - successful,
- * -1 - conection lost,
- * -2 - invalid response.
-*/
-static pop_query_status pop_connect(pop_data_t * pop_data)
-{
- char buf[LONG_STRING];
- const char *p, *q;
-
- if (mutt_socket_open(pop_data->conn) < 0
- || mutt_socket_readln(buf, sizeof(buf), pop_data->conn) < 0)
- {
- mutt_error(_("Error connecting to server: %s"),
- pop_data->conn->account.host);
- pop_data->status = POP_NONE;
- return PQ_NOT_CONNECTED;
- }
-
- pop_data->status = POP_CONNECTED;
- if (m_strncmp(buf, "+OK", 3)) {
- pop_data->err_msg[0] = '\0';
- pop_error(pop_data, buf);
- mutt_error("%s", pop_data->err_msg);
- return PQ_ERR;
- }
-
- p_delete(&pop_data->timestamp);
- if ((p = strchr(buf, '<')) && (q = strchr(p, '>'))) {
- pop_data->timestamp = p_dupstr(p, q + 1 - p);
- }
- return PQ_OK;
-}
-
-static void pop_logout (CONTEXT * ctx)
-{
- pop_query_status ret = 0;
- char buf[LONG_STRING];
- pop_data_t *pop_data = (pop_data_t *) ctx->data;
-
- if (pop_data->status == POP_CONNECTED) {
- mutt_message _("Closing connection to POP server...");
-
- if (ctx->readonly) {
- ret = pop_query(pop_data, buf, sizeof(buf), "RSET");
- }
-
- if (ret != PQ_NOT_CONNECTED) {
- pop_query(pop_data, buf, sizeof(buf), "QUIT");
- }
-
- mutt_clear_error ();
- }
-
- pop_data->status = POP_DISCONNECTED;
- return;
-}
-
-/* }}} */
-/* Authentication {{{ */
-
-static pop_auth_res_t pop_auth_sasl(pop_data_t *pop_data, const char *method)
-{
- sasl_conn_t *saslconn;
- sasl_interact_t *interaction = NULL;
-
- char buf[LONG_STRING], inbuf[LONG_STRING];
- const char *mech, *pc = NULL;
- unsigned int len, olen;
- unsigned char client_start;
- int rc;
-
- if (mutt_sasl_client_new(pop_data->conn, &saslconn) < 0) {
- return POP_A_FAILURE;
- }
-
- if (!method)
- method = pop_data->auth_list;
-
- for (;;) {
- rc = sasl_client_start(saslconn, method, &interaction, &pc, &olen,
- &mech);
- if (rc != SASL_INTERACT)
- break;
- mutt_sasl_interact(interaction);
- }
-
- if (rc != SASL_OK && rc != SASL_CONTINUE) {
- return POP_A_UNAVAIL;
- }
-
- client_start = (olen > 0);
- mutt_message(_("Authenticating (SASL)..."));
- snprintf(buf, sizeof (buf), "AUTH %s", mech);
- olen = strlen (buf);
-
- /* looping protocol */
- for (;;) {
- m_strcpy(buf + olen, sizeof(buf) - olen, "\r\n");
- mutt_socket_write(pop_data->conn, buf);
- if (mutt_socket_readln(inbuf, sizeof(inbuf), pop_data->conn) < 0) {
- sasl_dispose(&saslconn);
- pop_data->status = POP_DISCONNECTED;
- return POP_A_SOCKET;
- }
-
- if (rc != SASL_CONTINUE)
- break;
-
- if (!m_strncmp(inbuf, "+ ", 2)
- && sasl_decode64(inbuf, strlen(inbuf),
- buf, sizeof(buf) - 1, &len) != SASL_OK)
- {
- goto bail;
- }
-
- if (!client_start) {
- for (;;) {
- rc = sasl_client_step(saslconn, buf, len, &interaction, &pc,
- &olen);
- if (rc != SASL_INTERACT)
- break;
- mutt_sasl_interact(interaction);
- }
- } else {
- client_start = 0;
- }
-
- if (rc != SASL_CONTINUE && (olen == 0 || rc != SASL_OK))
- break;
-
- /* send out response, or line break if none needed */
- if (pc) {
- if (sasl_encode64(pc, olen, buf, sizeof(buf), &olen) != SASL_OK) {
- goto bail;
- }
- p_delete((char **)&pc);
- }
- }
-
- if (rc != SASL_OK)
- goto bail;
-
- if (!m_strncmp(inbuf, "+OK", 3)) {
- mutt_sasl_setup_conn(pop_data->conn, saslconn);
- return POP_A_SUCCESS;
- }
-
- bail:
- sasl_dispose(&saslconn);
- p_delete((char **)&pc);
-
- /* terminate SASL session if the last responce is not +OK nor -ERR */
- if (!m_strncmp(inbuf, "+ ", 2)) {
- if (pop_query(pop_data, buf, sizeof(buf), "*") == PQ_NOT_CONNECTED)
- return POP_A_SOCKET;
- }
-
- mutt_error(_("SASL authentication failed."));
- mutt_sleep(2);
-
- return POP_A_FAILURE;
-}
-
-static pop_auth_res_t pop_auth_apop(pop_data_t *pop_data, const char *method)
-{
- MD5_CTX mdContext;
- unsigned char digest[16];
- char hash[33];
- char buf[LONG_STRING];
- int i;
-
- if (!pop_data->timestamp)
- return POP_A_UNAVAIL;
-
- mutt_message _("Authenticating (APOP)...");
-
- /* Compute the authentication hash to send to the server */
- MD5Init(&mdContext);
- MD5Update(&mdContext, (unsigned char *)pop_data->timestamp,
- strlen(pop_data->timestamp));
- MD5Update(&mdContext, (unsigned char *)pop_data->conn->account.pass,
- strlen(pop_data->conn->account.pass));
- MD5Final(digest, &mdContext);
-
- for (i = 0; i < countof(digest); i++)
- sprintf(hash + 2 * i, "%02x", digest[i]);
-
- switch (pop_query(pop_data, buf, sizeof(buf), "APOP %s %s",
- pop_data->conn->account.user, hash))
- {
- case PQ_OK:
- return POP_A_SUCCESS;
- case PQ_NOT_CONNECTED:
- return POP_A_SOCKET;
- default:
- mutt_error("%s %s", _("APOP authentication failed."), pop_data->err_msg);
- mutt_sleep(2);
- return POP_A_FAILURE;
- }
-}
-
-static pop_auth_res_t pop_auth_user(pop_data_t *pop_data, const char *method)
-{
- char buf[LONG_STRING];
- pop_query_status ret;
-
- if (pop_data->cmd_user == CMD_NOT_AVAILABLE)
- return POP_A_UNAVAIL;
-
- mutt_message _("Authenticating (USER)...");
- ret = pop_query(pop_data, buf, sizeof(buf), "USER %s",
- pop_data->conn->account.user);
-
- if (pop_data->cmd_user == CMD_UNKNOWN) {
- if (ret == PQ_OK)
- pop_data->cmd_user = CMD_AVAILABLE;
- if (ret == PQ_ERR)
- pop_data->cmd_user = CMD_NOT_AVAILABLE;
- }
-
- if (ret == PQ_OK) {
- ret = pop_query(pop_data, buf, sizeof(buf), "PASS %s",
- pop_data->conn->account.pass);
- }
-
- switch (ret) {
- case PQ_OK:
- return POP_A_SUCCESS;
- case PQ_NOT_CONNECTED:
- return POP_A_SOCKET;
- default:
- mutt_error("%s %s", _("USER authentication failed."), pop_data->err_msg);
- mutt_sleep(2);
- return POP_A_FAILURE;
- }
-}
-
-typedef struct {
- pop_auth_res_t (*do_auth)(pop_data_t *, const char *);
- const char *method;
-} pop_auth_t;
-
-static pop_query_status pop_authenticate (pop_data_t * pop_data)
-{
- static pop_auth_t const pop_authenticators[] = {
- {pop_auth_sasl, NULL},
- {pop_auth_apop, "apop"},
- {pop_auth_user, "user"},
- {NULL, NULL}
- };
-
- ACCOUNT *act = &pop_data->conn->account;
- const pop_auth_t *auth;
- int attempts = 0;
-
- if (mutt_account_getuser(act) || !act->user[0]
- || mutt_account_getpass(act) || !act->pass[0])
- {
- return PFD_FUNCT_ERROR;
- }
-
- if (!m_strisempty(PopAuthenticators)) {
- const char *p, *q;
- char buf[STRING];
-
- for (p = PopAuthenticators; ; p = q) {
- while (*p == ':')
- p++;
- if (!*p)
- break;
-
- q = strchrnul(p, ':');
- m_strncpy(buf, sizeof(buf), p, q - p);
-
- for (auth = pop_authenticators; auth->do_auth; auth++) {
- if (auth->method && ascii_strcasecmp(auth->method, buf))
- continue;
-
- switch (auth->do_auth(pop_data, buf)) {
- case POP_A_SUCCESS:
- return PQ_OK;
- case POP_A_SOCKET:
- return PQ_NOT_CONNECTED;
- case POP_A_UNAVAIL:
- break;
- case POP_A_FAILURE:
- attempts++;
- break;
- }
- mutt_socket_close(pop_data->conn);
- }
- }
- } else {
- for (auth = pop_authenticators; auth->do_auth; auth++) {
- switch (auth->do_auth(pop_data, auth->method)) {
- case POP_A_SUCCESS:
- return PQ_OK;
- case POP_A_SOCKET:
- return PQ_NOT_CONNECTED;
- case POP_A_UNAVAIL:
- break;
- case POP_A_FAILURE:
- attempts++;
- break;
- }
- mutt_socket_close(pop_data->conn);
- }
- }
-
- if (!attempts)
- mutt_error(_("No authenticators available"));
- return PQ_ERR;
-}
-
-/* }}} */
-
-/*
- * This function calls funct(*line, *data) for each received line,
- * funct(NULL, *data) if rewind(*data) needs, exits when fail or done.
- * Returned codes:
- * 0 - successful,
- * -1 - conection lost,
- * -2 - invalid command or execution error,
- * -3 - error in funct(*line, *data)
- */
-static pop_query_status
-pop_fetch_data(pop_data_t *pop_data, const char *query, progress_t *bar,
- int (*funct)(char *, void *), void *data)
-{
- pop_query_status ret;
- char buf[LONG_STRING];
- buffer_t inbuf;
- ssize_t pos = 0;
-
- buffer_init(&inbuf);
-
- m_strcpy(buf, sizeof(buf), query);
- ret = _pop_query(pop_data, buf, sizeof(buf));
- if (ret != PQ_OK)
- return ret;
-
- for (;;) {
- int dot = 0;
-
- if (mutt_socket_readln2(&inbuf, pop_data->conn) < 0) {
- pop_data->status = POP_DISCONNECTED;
- ret = PQ_NOT_CONNECTED;
- break;
- }
-
- if (bar) {
- mutt_progress_bar(bar, pos += inbuf.len);
- }
-
- if (inbuf.data[0] == '.') {
- if (inbuf.data[1] != '.')
- break;
- dot = 1;
- }
-
- if (funct(inbuf.data + dot, data) < 0) {
- buffer_wipe(&inbuf);
- ret = PFD_FUNCT_ERROR;
- break;
- }
-
- buffer_reset(&inbuf);
- }
-
- buffer_wipe(&inbuf);
- return ret;
-}
-
-static int fetch_capa (char *line, void *data)
-{
- pop_data_t *pop_data = (pop_data_t *) data;
- char *c;
-
- if (!ascii_strncasecmp (line, "SASL", 4)) {
- p_delete(&pop_data->auth_list);
- c = vskipspaces(line + 4);
- pop_data->auth_list = m_strdup(c);
- }
-
- else if (!ascii_strncasecmp (line, "STLS", 4))
- pop_data->cmd_stls = CMD_AVAILABLE;
-
- else if (!ascii_strncasecmp (line, "UIDL", 4))
- pop_data->cmd_uidl = CMD_AVAILABLE;
-
- else if (!ascii_strncasecmp (line, "TOP", 3))
- pop_data->cmd_top = CMD_AVAILABLE;
-
- return 0;
-}
-
-static int fetch_auth (char *line, void *data)
-{
- pop_data_t *pop_data = (pop_data_t *) data;
- ssize_t auth_list_len;
-
- if (!pop_data->auth_list) {
- auth_list_len = m_strlen(line) + 1;
- pop_data->auth_list = p_new(char, auth_list_len);
- } else {
- auth_list_len = m_strlen(pop_data->auth_list) + m_strlen(line) + 2;
- p_realloc(&pop_data->auth_list, auth_list_len);
- m_strcat(pop_data->auth_list, auth_list_len, " ");
- }
- m_strcat(pop_data->auth_list, auth_list_len, line);
-
- return 0;
-}
-
-/*
- * Get capabilities
- * 0 - successful,
- * -1 - conection lost,
- * -2 - execution error.
-*/
-static pop_query_status pop_capabilities(pop_data_t * pop_data, int mode)
-{
- /* don't check capabilities on reconnect */
- if (pop_data->capabilities)
- return 0;
-
- /* init capabilities */
- if (mode == 0) {
- pop_data->cmd_capa = CMD_NOT_AVAILABLE;
- pop_data->cmd_stls = CMD_NOT_AVAILABLE;
- pop_data->cmd_uidl = CMD_NOT_AVAILABLE;
- pop_data->cmd_top = CMD_NOT_AVAILABLE;
- pop_data->cmd_user = CMD_NOT_AVAILABLE;
- pop_data->resp_codes = 0;
- pop_data->expire = 1;
- p_delete(&pop_data->auth_list);
- }
-
- /* Execute CAPA command */
- if (mode == 0 || pop_data->cmd_capa != CMD_NOT_AVAILABLE) {
- switch (pop_fetch_data(pop_data, "CAPA\r\n", NULL, fetch_capa, pop_data)) {
- case PQ_OK:
- pop_data->cmd_capa = CMD_AVAILABLE;
- break;
- case PFD_FUNCT_ERROR:
- case PQ_ERR:
- pop_data->cmd_capa = CMD_NOT_AVAILABLE;
- break;
- case PQ_NOT_CONNECTED:
- return PQ_NOT_CONNECTED;
- }
- }
-
- /* CAPA not supported, use defaults */
- if (mode == 0 && pop_data->cmd_capa == CMD_NOT_AVAILABLE) {
- pop_data->cmd_uidl = CMD_UNKNOWN;
- pop_data->cmd_top = CMD_UNKNOWN;
-
- if (pop_fetch_data(pop_data, "AUTH\r\n", NULL, fetch_auth, pop_data) ==
- PQ_NOT_CONNECTED)
- return PQ_NOT_CONNECTED;
- }
-
- /* Check capabilities */
- if (mode == 2) {
- const char *msg = NULL;
-
- if (!pop_data->expire)
- msg = _("Unable to leave messages on server.");
- if (pop_data->cmd_top == CMD_NOT_AVAILABLE)
- msg = _("Command TOP is not supported by server.");
- if (pop_data->cmd_uidl == CMD_NOT_AVAILABLE)
- msg = _("Command UIDL is not supported by server.");
- if (msg && pop_data->cmd_capa != CMD_AVAILABLE) {
- mutt_error (msg);
- return PQ_ERR;
- }
- pop_data->capabilities = 1;
- }
-
- return PQ_OK;
-}
-
-/* given an POP mailbox name, return host, port, username and password */
-static int pop_parse_path (const char *path, ACCOUNT * act)
-{
- ciss_url_t url;
- char *c;
- int ret = -1;
-
- /* Defaults */
- act->flags = 0;
- act->port = POP_PORT;
- act->type = M_ACCT_TYPE_POP;
-
- c = m_strdup(path);
- url_parse_ciss (&url, c);
-
- if (url.scheme == U_POP || url.scheme == U_POPS) {
- if (url.scheme == U_POPS) {
- act->has_ssl = 1;
- act->port = POP_SSL_PORT;
- }
-
- if ((!url.path || !*url.path) && mutt_account_fromurl (act, &url) == 0)
- ret = 0;
- }
-
- p_delete(&c);
- return ret;
-}
-
-/*
- * Open connection and authenticate
- * 0 - successful,
- * -1 - conection lost,
- * -2 - invalid command or execution error,
- * -3 - authentication canceled.
-*/
-static pop_query_status pop_open_connection (pop_data_t * pop_data)
-{
- pop_query_status ret;
- int n, size;
- char buf[LONG_STRING];
-
- ret = pop_connect(pop_data);
- if (ret != PQ_OK) {
- mutt_sleep (2);
- return ret;
- }
-
- ret = pop_capabilities (pop_data, 0);
- if (ret == PQ_NOT_CONNECTED)
- goto err_conn;
- if (ret == PQ_ERR) {
- mutt_sleep (2);
- return PQ_ERR;
- }
-
- /* Attempt STLS if available and desired. */
- if (!pop_data->conn->ssf && (pop_data->cmd_stls || mod_ssl.force_tls)) {
- if (mod_ssl.force_tls)
- pop_data->use_stls = 2;
- if (pop_data->use_stls == 0) {
- pop_data->use_stls = 1;
- if (mod_ssl.starttls)
- pop_data->use_stls = 2;
- }
- if (pop_data->use_stls == 2) {
- ret = pop_query(pop_data, buf, sizeof(buf), "STLS");
- if (ret == PQ_NOT_CONNECTED)
- goto err_conn;
- if (ret != PQ_OK) {
- mutt_error ("%s", pop_data->err_msg);
- mutt_sleep (2);
- }
- else if (mutt_ssl_starttls (pop_data->conn))
- {
- mutt_error (_("Could not negotiate TLS connection"));
- mutt_sleep (2);
- return PQ_ERR;
- }
- else {
- /* recheck capabilities after STLS completes */
- ret = pop_capabilities (pop_data, 1);
- if (ret == PQ_NOT_CONNECTED)
- goto err_conn;
- if (ret == PQ_ERR) {
- mutt_sleep (2);
- return PQ_ERR;
- }
- }
- }
- }
-
- if (mod_ssl.force_tls && !pop_data->conn->ssf) {
- mutt_error _("Encrypted connection unavailable");
- mutt_sleep (1);
- return -2;
- }
-
- ret = pop_authenticate (pop_data);
- if (ret == PQ_NOT_CONNECTED)
- goto err_conn;
- if (ret == PFD_FUNCT_ERROR)
- mutt_clear_error ();
- if (ret != PQ_OK)
- return ret;
-
- /* recheck capabilities after authentication */
- ret = pop_capabilities (pop_data, 2);
- if (ret == PQ_NOT_CONNECTED)
- goto err_conn;
- if (ret == PQ_ERR) {
- mutt_sleep (2);
- return PQ_ERR;
- }
-
- /* get total size of mailbox */
- ret = pop_query(pop_data, buf, sizeof(buf), "STAT");
- if (ret == PQ_NOT_CONNECTED)
- goto err_conn;
- if (ret == PQ_ERR) {
- mutt_error ("%s", pop_data->err_msg);
- mutt_sleep (2);
- return ret;
- }
-
- sscanf (buf, "+OK %u %u", &n, &size);
- pop_data->size = size;
- return PQ_OK;
-
-err_conn:
- pop_data->status = POP_DISCONNECTED;
- mutt_error _("Server closed connection!");
-
- mutt_sleep (2);
- return PQ_NOT_CONNECTED;
-}
-
-/* find message with this UIDL and set refno */
-static int check_uidl (char *line, void *data)
-{
- int i, idx;
- CONTEXT *ctx = (CONTEXT *)data;
-
- sscanf (line, "%u %s", &idx, line);
- for (i = 0; i < ctx->msgcount; i++) {
- if (!m_strcmp(ctx->hdrs[i]->data, line)) {
- ctx->hdrs[i]->refno = idx;
- break;
- }
- }
-
- return 0;
-}
-
-/* reconnect and verify indexes if connection was lost */
-static pop_query_status pop_reconnect (CONTEXT * ctx)
-{
- pop_query_status ret;
- pop_data_t *pop_data = (pop_data_t *) ctx->data;
- progress_t bar;
-
- if (pop_data->status == POP_CONNECTED)
- return PQ_OK;
- if (pop_data->status == POP_BYE)
- return PQ_NOT_CONNECTED;
-
- for (;;) {
- mutt_socket_close (pop_data->conn);
-
- ret = pop_open_connection(pop_data);
- if (ret == PQ_OK) {
- int i;
-
- bar.msg = _("Verifying message indexes...");
- bar.size = 0;
- mutt_progress_bar (&bar, 0);
-
- for (i = 0; i < ctx->msgcount; i++)
- ctx->hdrs[i]->refno = -1;
-
- ret = pop_fetch_data(pop_data, "UIDL\r\n", &bar, check_uidl, ctx);
- if (ret == PQ_ERR) {
- mutt_error ("%s", pop_data->err_msg);
- mutt_sleep (2);
- }
- }
- if (ret == PQ_OK)
- return PQ_OK;
-
- pop_logout (ctx);
-
- if (ret == PQ_ERR)
- return PQ_NOT_CONNECTED;
-
- if (query_quadoption (OPT_POPRECONNECT,
- _("Connection lost. Reconnect to POP server?")) !=
- M_YES)
- return PQ_NOT_CONNECTED;
- }
-}
-
-/* write line to file */
-static int fetch_message (char *line, void *file)
-{
- FILE *f = (FILE *) file;
-
- fputs (line, f);
- if (fputc ('\n', f) == EOF)
- return -1;
-
- return 0;
-}
-
-/*
- * Read header
- * returns:
- * 0 on success
- * -1 - conection lost,
- * -2 - invalid command or execution error,
- * -3 - error writing to tempfile
- */
-static pop_query_status pop_read_header (pop_data_t * pop_data, HEADER * h)
-{
- FILE *f;
- int idx;
- pop_query_status ret;
- long length;
- char buf[LONG_STRING];
-
- f = tmpfile();
- if (!f) {
- mutt_error(_("Could not create temporary file"));
- return PFD_FUNCT_ERROR;
- }
-
- ret = pop_query(pop_data, buf, sizeof(buf), "LIST %d", h->refno);
- if (ret == PQ_OK) {
- sscanf (buf, "+OK %d %ld", &idx, &length);
-
- snprintf (buf, sizeof (buf), "TOP %d 0\r\n", h->refno);
- ret = pop_fetch_data(pop_data, buf, NULL, fetch_message, f);
-
- if (pop_data->cmd_top == CMD_UNKNOWN) {
- if (ret == PQ_OK) {
- pop_data->cmd_top = CMD_AVAILABLE;
- }
-
- if (ret == PQ_ERR) {
- pop_data->cmd_top = CMD_NOT_AVAILABLE;
- snprintf (pop_data->err_msg, sizeof (pop_data->err_msg),
- _("Command TOP is not supported by server."));
- }
- }
- }
-
- switch (ret) {
- case PQ_OK:
- {
- rewind (f);
- h->env = mutt_read_rfc822_header (f, h, 0, 0);
- h->content->length = length - h->content->offset + 1;
- rewind (f);
- while (!feof (f)) {
- h->content->length--;
- fgets (buf, sizeof (buf), f);
- }
- break;
- }
- case PQ_ERR:
- {
- mutt_error ("%s", pop_data->err_msg);
- break;
- }
- case PFD_FUNCT_ERROR:
- {
- mutt_error _("Can't write header to temporary file!");
-
- break;
- }
- case PQ_NOT_CONNECTED:
- {
- mutt_error _("Can't fetch header: Not connected!");
- break;
- }
- }
-
- m_fclose(&f);
- return ret;
-}
-
-/* parse UIDL */
-static int fetch_uidl (char *line, void *data)
-{
- int i, idx;
- CONTEXT *ctx = (CONTEXT *) data;
- pop_data_t *pop_data = (pop_data_t *) ctx->data;
-
- sscanf (line, "%d %s", &idx, line);
- for (i = 0; i < ctx->msgcount; i++)
- if (!m_strcmp(line, ctx->hdrs[i]->data))
- break;
-
- if (i == ctx->msgcount) {
- if (i >= ctx->hdrmax)
- mx_alloc_memory (ctx);
-
- ctx->msgcount++;
- ctx->hdrs[i] = header_new();
- ctx->hdrs[i]->data = m_strdup(line);
- }
- else if (ctx->hdrs[i]->index != idx - 1)
- pop_data->clear_cache = 1;
-
- ctx->hdrs[i]->refno = idx;
- ctx->hdrs[i]->index = idx - 1;
-
- return 0;
-}
-
-/*
- * Read headers
- * returns:
- * 0 on success
- * -1 - conection lost,
- * -2 - invalid command or execution error,
- * -3 - error writing to tempfile
- */
-static int pop_fetch_headers (CONTEXT * ctx)
-{
- int i, old_count, new_count;
- pop_query_status ret;
- pop_data_t *pop_data = (pop_data_t *) ctx->data;
-
- time (&pop_data->check_time);
- pop_data->clear_cache = 0;
-
- for (i = 0; i < ctx->msgcount; i++)
- ctx->hdrs[i]->refno = -1;
-
- old_count = ctx->msgcount;
- ret = pop_fetch_data(pop_data, "UIDL\r\n", NULL, fetch_uidl, ctx);
- new_count = ctx->msgcount;
- ctx->msgcount = old_count;
-
- if (pop_data->cmd_uidl == CMD_UNKNOWN) {
- if (ret == PQ_OK) {
- pop_data->cmd_uidl = CMD_AVAILABLE;
- }
-
- if (ret == PQ_ERR && pop_data->cmd_uidl == CMD_UNKNOWN) {
- pop_data->cmd_uidl = CMD_NOT_AVAILABLE;
-
- snprintf (pop_data->err_msg, sizeof (pop_data->err_msg),
- _("Command UIDL is not supported by server."));
- }
- }
-
- if (ret == PQ_OK) {
- for (i = 0; i < old_count; i++)
- if (ctx->hdrs[i]->refno == -1)
- ctx->hdrs[i]->deleted = 1;
-
- for (i = old_count; i < new_count; i++) {
- mutt_message (_("Fetching message headers... [%d/%d]"),
- i + 1 - old_count, new_count - old_count);
-
- ret = pop_read_header (pop_data, ctx->hdrs[i]);
- if (ret != PQ_OK)
- break;
-
- ctx->msgcount++;
- }
-
- if (i > old_count)
- mx_update_context (ctx, i - old_count);
- }
-
- if (ret != PQ_OK) {
- for (i = ctx->msgcount; i < new_count; i++)
- header_delete(&ctx->hdrs[i]);
- return ret;
- }
-
- mutt_clear_error ();
- return new_count - old_count;
-}
-
-/* delete all cached messages */
-static void pop_clear_cache (pop_data_t * pop_data)
-{
- int i;
-
- if (!pop_data->clear_cache)
- return;
-
- for (i = 0; i < POP_CACHE_LEN; i++) {
- if (pop_data->cache[i].path) {
- unlink (pop_data->cache[i].path);
- p_delete(&pop_data->cache[i].path);
- }
- }
-}
-
-/* pop_mx functions {{{ */
-
-static int pop_is_magic(const char* path, struct stat* st)
-{
- url_scheme_t s = url_check_scheme(NONULL(path));
- return s == U_POP || s == U_POPS ? M_POP : -1;
-}
-
-static int pop_open_mailbox (CONTEXT * ctx)
-{
- int ret;
- char buf[LONG_STRING];
- CONNECTION *conn;
- ACCOUNT act;
- pop_data_t *pop_data;
- ciss_url_t url;
-
- if (pop_parse_path (ctx->path, &act)) {
- mutt_error (_("%s is an invalid POP path"), ctx->path);
- mutt_sleep (2);
- return -1;
- }
-
- mutt_account_tourl (&act, &url);
- url.path = NULL;
- url_ciss_tostring (&url, buf, sizeof (buf), 0);
- conn = mutt_conn_find (NULL, &act);
- if (!conn)
- return -1;
-
- p_delete(&ctx->path);
- ctx->path = m_strdup(buf);
-
- pop_data = p_new(pop_data_t, 1);
- pop_data->conn = conn;
- ctx->data = pop_data;
-
- if (pop_open_connection(pop_data) != PQ_OK)
- return -1;
-
- conn->data = pop_data;
-
- for (;;) {
- if (pop_reconnect (ctx) != PQ_OK)
- return -1;
-
- mutt_message _("Fetching list of messages...");
- ctx->size = pop_data->size;
- ret = pop_fetch_headers (ctx);
-
- if (ret >= 0)
- return 0;
-
- if (ret < -1) {
- mutt_sleep (2);
- return -1;
- }
- }
-}
-
-static int pop_acl_check(CONTEXT *ctx, int bit)
-{
- switch (bit) {
- case ACL_DELETE: /* (un)deletion */
- case ACL_SEEN: /* mark as read */
- return 1;
- case ACL_INSERT: /* editing messages */
- case ACL_WRITE: /* change importance */
- default:
- return 0;
- }
-}
-
-static int pop_check_mailbox(CONTEXT * ctx, int *index_hint, int unused)
-{
- int ret;
- pop_data_t *pop_data = (pop_data_t *) ctx->data;
-
- if ((pop_data->check_time + PopCheckTimeout) > time (NULL))
- return 0;
-
- pop_logout (ctx);
-
- mutt_socket_close (pop_data->conn);
-
- if (pop_open_connection (pop_data) < 0)
- return -1;
-
- mutt_message _("Checking for new messages...");
- ctx->size = pop_data->size;
- ret = pop_fetch_headers (ctx);
- pop_clear_cache (pop_data);
-
- if (ret < 0)
- return -1;
-
- if (ret > 0)
- return M_NEW_MAIL;
-
- return 0;
-}
-
-static void pop_close_mailbox (CONTEXT * ctx)
-{
- pop_data_t *pop_data = (pop_data_t *) ctx->data;
-
- if (!pop_data)
- return;
-
- pop_logout (ctx);
-
- if (pop_data->status != POP_NONE)
- mutt_socket_close (pop_data->conn);
-
- pop_data->status = POP_NONE;
-
- pop_data->clear_cache = 1;
- pop_clear_cache (pop_data);
-
- if (!pop_data->conn->data)
- mutt_socket_free (pop_data->conn);
-
- return;
-}
-
-static int pop_sync_mailbox(CONTEXT * ctx, int unused, int *index_hint)
-{
- int i;
- pop_query_status ret;
- char buf[LONG_STRING];
- pop_data_t *pop_data = (pop_data_t *) ctx->data;
-
- pop_data->check_time = 0;
-
- for (;;) {
- if (pop_reconnect (ctx) != PQ_OK)
- return PQ_NOT_CONNECTED;
-
- mutt_message (_("Marking %d messages deleted..."), ctx->deleted);
-
- for (i = 0, ret = 0; ret == 0 && i < ctx->msgcount; i++) {
- if (ctx->hdrs[i]->deleted) {
- ret = pop_query(pop_data, buf, sizeof(buf), "DELE %d",
- ctx->hdrs[i]->refno);
- }
- }
-
- if (ret == PQ_OK) {
- ret = pop_query(pop_data, buf, sizeof(buf), "QUIT");
- }
-
- if (ret == PQ_OK) {
- pop_data->clear_cache = 1;
- pop_clear_cache (pop_data);
- pop_data->status = POP_DISCONNECTED;
- return PQ_OK;
- }
-
- if (ret == PQ_ERR) {
- mutt_error ("%s", pop_data->err_msg);
- mutt_sleep (2);
- return PQ_NOT_CONNECTED;
- }
- }
-}
-
-/* }}} */
-
-mx_t const pop_mx = {
- M_POP,
- 0,
- pop_is_magic,
- NULL,
- NULL,
- pop_open_mailbox,
- NULL,
- pop_acl_check,
- pop_check_mailbox,
- pop_close_mailbox,
- pop_sync_mailbox,
- NULL,
-};
-
-/* public API {{{ */
-
-void pop_fetch_mail (void)
-{
- char buffer[LONG_STRING];
- char msgbuf[STRING];
- char *url, *p;
- int i, delanswer, last = 0, msgs, bytes, rset = 0;
- pop_query_status ret;
- CONNECTION *conn;
- CONTEXT ctx;
- MESSAGE *msg = NULL;
- ACCOUNT act;
- pop_data_t *pop_data;
- ssize_t plen;
-
- if (m_strisempty(PopHost)) {
- mutt_error _("POP host is not defined.");
- return;
- }
-
- plen = m_strlen(PopHost) + 7;
- url = p = p_new(char, plen);
- if (url_check_scheme (PopHost) == U_UNKNOWN) {
- snprintf(p, plen, "pop://%s", PopHost);
- } else {
- m_strcpy(p, plen, PopHost);
- }
-
- ret = pop_parse_path (url, &act);
- p_delete(&url);
- if (ret) {
- mutt_error (_("%s is an invalid POP path"), PopHost);
- return;
- }
-
- conn = mutt_conn_find (NULL, &act);
- if (!conn)
- return;
-
- pop_data = p_new(pop_data_t, 1);
- pop_data->conn = conn;
-
- if (pop_open_connection (pop_data) < 0) {
- mutt_socket_free (pop_data->conn);
- p_delete(&pop_data);
- return;
- }
-
- conn->data = pop_data;
-
- mutt_message _("Checking for new messages...");
-
- /* find out how many messages are in the mailbox. */
- ret = pop_query(pop_data, buffer, sizeof(buffer), "STAT");
- if (ret == PQ_NOT_CONNECTED)
- goto fail;
- if (ret == PQ_ERR) {
- mutt_error ("%s", pop_data->err_msg);
- goto finish;
- }
-
- sscanf (buffer, "+OK %d %d", &msgs, &bytes);
-
- /* only get unread messages */
- if (msgs > 0 && option (OPTPOPLAST)) {
- ret = pop_query(pop_data, buffer, sizeof(buffer), "LAST");
- if (ret == PQ_NOT_CONNECTED)
- goto fail;
- if (ret == PQ_OK)
- sscanf (buffer, "+OK %d", &last);
- }
-
- if (msgs <= last) {
- mutt_message _("No new mail in POP mailbox.");
-
- goto finish;
- }
-
- if (mx_open_mailbox (NONULL (Spoolfile), M_APPEND, &ctx) == NULL)
- goto finish;
-
- delanswer =
- query_quadoption (OPT_POPDELETE, _("Delete messages from server?"));
-
- snprintf (msgbuf, sizeof (msgbuf), _("Reading new messages (%d bytes)..."),
- bytes);
- mutt_message ("%s", msgbuf);
-
- for (i = last + 1; i <= msgs; i++) {
- if ((msg = mx_open_new_message (&ctx, NULL, M_ADD_FROM)) == NULL)
- ret = -3;
- else {
- snprintf (buffer, sizeof (buffer), "RETR %d\r\n", i);
- ret = pop_fetch_data(pop_data, buffer, NULL, fetch_message, msg->fp);
- if (ret == PFD_FUNCT_ERROR)
- rset = 1;
-
- if (ret == PQ_OK && mx_commit_message (msg, &ctx) != 0) {
- rset = 1;
- ret = PFD_FUNCT_ERROR;
- }
-
- mx_close_message (&msg);
- }
-
- if (ret == PQ_OK && delanswer == M_YES) {
- ret = pop_query(pop_data, buffer, sizeof(buffer), "DELE %d", i);
- }
-
- if (ret == PQ_NOT_CONNECTED) {
- mx_close_mailbox (&ctx, NULL);
- goto fail;
- }
- if (ret == PQ_ERR) {
- mutt_error ("%s", pop_data->err_msg);
- break;
- }
- if (ret == -3) { /* this is -3 when ret != 0, because it will keep the value from before *gna* */
- mutt_error _("Error while writing mailbox!");
-
- break;
- }
-
- mutt_message (_("%s [%d of %d messages read]"), msgbuf, i - last,
- msgs - last);
- }
-
- mx_close_mailbox (&ctx, NULL);
-
- if (rset) {
- /* make sure no messages get deleted */
- if (pop_query(pop_data, buffer, sizeof(buffer), "RSET") ==
- PQ_NOT_CONNECTED)
- goto fail;
- }
-
-finish:
- if (pop_query(pop_data, buffer, sizeof(buffer), "QUIT") == PQ_NOT_CONNECTED)
- goto fail;
- mutt_socket_close (conn);
- p_delete(&pop_data);
- return;
-
-fail:
- mutt_error _("Server closed connection!");
- mutt_socket_close (conn);
- p_delete(&pop_data);
-}
-
-/* fetch message from POP server */
-int pop_fetch_message (MESSAGE * msg, CONTEXT * ctx, int msgno)
-{
- int ret;
- void *uidl;
- char buf[LONG_STRING];
- char path[_POSIX_PATH_MAX];
- progress_t bar;
- pop_data_t *pop_data = (pop_data_t *) ctx->data;
- POP_CACHE *cache;
- HEADER *h = ctx->hdrs[msgno];
-
- /* see if we already have the message in our cache */
- cache = &pop_data->cache[h->index % POP_CACHE_LEN];
-
- if (cache->path) {
- if (cache->index == h->index) {
- /* yes, so just return a pointer to the message */
- msg->fp = fopen (cache->path, "r");
- if (msg->fp)
- return 0;
-
- mutt_perror (cache->path);
- mutt_sleep (2);
- return -1;
- }
- else {
- /* clear the previous entry */
- unlink (cache->path);
- p_delete(&cache->path);
- }
- }
-
- for (;;) {
- if (pop_reconnect (ctx) != PQ_OK)
- return -1;
-
- /* verify that massage index is correct */
- if (h->refno < 0) {
- mutt_error
- _("The message index is incorrect. Try reopening the mailbox.");
- mutt_sleep (2);
- return -1;
- }
-
- bar.size = h->content->length + h->content->offset - 1;
- bar.msg = _("Fetching message...");
- mutt_progress_bar (&bar, 0);
-
- msg->fp = m_tempfile(path, sizeof(path), NONULL(mod_core.tmpdir), NULL);
- if (!msg->fp) {
- mutt_error(_("Could not create temporary file"));
- mutt_sleep(2);
- return -1;
- }
-
- snprintf(buf, sizeof(buf), "RETR %d\r\n", h->refno);
- ret = pop_fetch_data(pop_data, buf, &bar, fetch_message, msg->fp);
- if (ret == PQ_OK)
- break;
-
- m_fclose(&msg->fp);
- unlink (path);
-
- if (ret == PQ_ERR) {
- mutt_error ("%s", pop_data->err_msg);
- mutt_sleep (2);
- return -1;
- }
-
- if (ret == PFD_FUNCT_ERROR) {
- mutt_error _("Can't write message to temporary file!");
-
- mutt_sleep (2);
- return -1;
- }
- }
-
- /* Update the header information. Previously, we only downloaded a
- * portion of the headers, those required for the main display.
- */
- cache->index = h->index;
- cache->path = m_strdup(path);
- rewind (msg->fp);
- uidl = h->data;
- envelope_delete(&h->env);
- h->env = mutt_read_rfc822_header (msg->fp, h, 0, 0);
- h->data = uidl;
- h->lines = 0;
- fgets (buf, sizeof (buf), msg->fp);
- while (!feof (msg->fp)) {
- ctx->hdrs[msgno]->lines++;
- fgets (buf, sizeof (buf), msg->fp);
- }
-
- h->content->length = ftello (msg->fp) - h->content->offset;
-
- /* This needs to be done in case this is a multipart message */
- h->security = crypt_query (h->content);
-
- mutt_clear_error ();
- rewind (msg->fp);
-
- return 0;
-}
-
-/* }}} */
projects / apps / madmutt.git / blobdiff