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#include <stdio.h> |
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#include <string.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <errno.h> |
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|
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#include "config.h" |
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#include "imapfilter.h" |
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#include "imap.h" |
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#include "connect.h" |
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#include "log.h" |
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|
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|
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static int tag = 0xA000; /* Every IMAP command is prefixed with a |
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unique [:alnum:] string. */ |
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extern int sock; |
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extern int dfilcnt, afilcnt; |
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extern filter_entry **dfilters, **afilters; |
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extern account_data **accounts; |
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extern int curacc; |
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extern int options; |
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extern unsigned int dlimit, alimit; |
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|
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|
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/* |
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* Sends to server data; a command. |
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*/ |
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int send_command(char *command) |
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{ |
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|
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#ifdef DEBUG |
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printf("debug: sending command: %s", command); |
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#endif |
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|
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if (write(sock, command, strlen(command)) == -1) { |
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error("imapfilter: error while sending command; %s", |
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strerror(errno)); |
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return FAILURE; |
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} |
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|
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return SUCCESS; |
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} |
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|
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|
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/* |
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* Calls send_command() and get_response(). |
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*/ |
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int send_command_get_response(char *command) |
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{ |
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char buf[RESPONSE_BUFFER_MAX]; |
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|
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if (!send_command(command)) { |
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get_response(buf); |
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return SUCCESS; |
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} else |
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return FAILURE; |
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} |
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|
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|
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#ifdef DEBUG |
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/* |
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* IMAP NOOP: does nothing always succeeds. |
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*/ |
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int imap_noop(void) |
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{ |
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char command[SMALL_COMMAND_MAX]; |
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|
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verbose("Client request: NOOP\n"); |
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|
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snprintf(command, SMALL_COMMAND_MAX, "%X NOOP\r\n", tag++); |
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|
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return send_command_get_response(command); |
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|
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} |
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#endif |
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|
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|
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/* |
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* IMAP LOGOUT: informs server that client is done. |
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*/ |
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int imap_logout(void) |
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{ |
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char command[SMALL_COMMAND_MAX]; |
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|
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verbose("Client request: LOGOUT\n"); |
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|
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snprintf(command, SMALL_COMMAND_MAX, "%X LOGOUT\r\n", tag++); |
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|
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return send_command_get_response(command); |
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} |
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|
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|
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/* |
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* IMAP LOGIN: identifies client to server. |
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*/ |
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int imap_login(void) |
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{ |
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char command[MEDIUM_COMMAND_MAX]; |
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|
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verbose("Client request: LOGIN\n"); |
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|
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snprintf(command, MEDIUM_COMMAND_MAX, "%X LOGIN \"%s\" \"%s\"\r\n", |
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tag++, accounts[curacc]->username, |
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accounts[curacc]->password); |
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|
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return send_command_get_response(command); |
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} |
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|
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|
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/* |
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* IMAP SELECT: selects a mailbox in which messages can be accessed. |
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*/ |
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int imap_select(void) |
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{ |
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char command[SMALL_COMMAND_MAX]; |
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|
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verbose("Client request: SELECT\n"); |
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|
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snprintf(command, SMALL_COMMAND_MAX, "%X SELECT INBOX\r\n", tag++); |
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|
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return send_command_get_response(command); |
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} |
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|
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/* |
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* IMAP SEARCH: searches the mailbox for messages that match certain criteria. |
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*/ |
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int imap_search(char *results) |
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{ |
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char command[BIG_COMMAND_MAX]; |
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|
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verbose("Client request: SEARCH\n"); |
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|
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generate_search_filters(command); |
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if (send_command(command)) |
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return FAILURE; |
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search_response(results); |
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|
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verbose("Client request: SEARCH\n"); |
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|
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if (alimit && afilcnt) { |
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generate_search_limits(command); |
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if (send_command(command)) |
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return FAILURE; |
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search_response(results); |
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} |
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|
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return SUCCESS; |
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} |
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|
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|
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/* |
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* IMAP FETCH: retrieves data associated with a message. |
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*/ |
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int imap_fetch(unsigned int m, char *results) |
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{ |
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char command[MEDIUM_COMMAND_MAX]; |
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|
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verbose("Client request: FETCH\n"); |
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|
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snprintf(command, MEDIUM_COMMAND_MAX, |
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"%X FETCH %d BODY[HEADER.FIELDS (\"DATE\" \"FROM\" \"SUBJECT\")]\r\n", |
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tag++, m); |
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|
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if (!send_command(command)) { |
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fetch_response(results); |
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return SUCCESS; |
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} else |
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return FAILURE; |
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} |
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|
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|
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/* |
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* IMAP STORE: alters data associated with a message. |
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*/ |
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int imap_store(unsigned int m) |
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{ |
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char command[MEDIUM_COMMAND_MAX]; |
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|
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verbose("Client request: STORE\n"); |
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|
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snprintf(command, MEDIUM_COMMAND_MAX, |
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"%X STORE %d +FLAGS \\Deleted\r\n", tag++, m); |
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|
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return send_command_get_response(command); |
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} |
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|
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|
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/* |
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* IMAP EXPUNGE: premanently removes any messages with the \Deleted flag set. |
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*/ |
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int imap_expunge(void) |
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{ |
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char command[SMALL_COMMAND_MAX]; |
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|
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verbose("Client request: EXPUNGE\n"); |
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|
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snprintf(command, SMALL_COMMAND_MAX, "%X EXPUNGE\r\n", tag++); |
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|
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return send_command_get_response(command); |
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} |
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|
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|
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/* |
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* Prepare according to the filters defined by the user the IMAP SEARCH |
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* command that will be sent. This command will search for DENY, ALLOW, |
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* and DENY_LIMIT filters. |
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*/ |
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void generate_search_filters(char *command) |
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{ |
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int len; |
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|
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snprintf(command, BIG_COMMAND_MAX, "%X SEARCH", tag++); |
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|
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|
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deny_filters(command); |
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|
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if (dlimit) { |
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len = strlen(command); |
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snprintf(command + len, BIG_COMMAND_MAX - len, " LARGER %d", |
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dlimit); |
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} else if (!dfilcnt) { /* If no DENY filters were defined, then |
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deny all except the ALLOW filters. */ |
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len = strlen(command); |
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snprintf(command + len, BIG_COMMAND_MAX - len, " ALL"); |
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} |
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|
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allow_filters(command, "NOT"); |
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|
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len = strlen(command); |
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snprintf(command + len, BIG_COMMAND_MAX - len, "\r\n"); |
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} |
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|
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|
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/* |
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* Prepare according to the filters defined by the user the IMAP SEARCH |
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* command that will be sent. This command will search for the ALLOW_LIMIT |
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* filter. |
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*/ |
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void generate_search_limits(char *command) |
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{ |
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int len; |
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|
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snprintf(command, BIG_COMMAND_MAX, "%X SEARCH", tag++); |
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|
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allow_filters(command, "OR"); |
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|
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len = strlen(command); |
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snprintf(command + len, BIG_COMMAND_MAX - len, " LARGER %d", alimit); |
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|
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len = strlen(command); |
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snprintf(command + len, BIG_COMMAND_MAX - len, "\r\n"); |
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|
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} |
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|
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|
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/* |
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* Adds to the IMAP SEARCH command all the DENY type filters. |
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*/ |
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void deny_filters(char *command) |
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{ |
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int f = 0; |
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int len; |
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|
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if (dfilcnt > 0) { |
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while (f < (dfilcnt - 1)) { |
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len = strlen(command); |
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snprintf(command + len, BIG_COMMAND_MAX - len, |
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" OR %s%s \"%s\"", |
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custom_header(dfilters[f]->custom), |
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dfilters[f]->name, dfilters[f]->body); |
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f++; |
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} |
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|
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len = strlen(command); |
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snprintf(command + len, BIG_COMMAND_MAX - len, " %s%s%s \"%s\"", |
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(dlimit ? "OR " : ""), |
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custom_header(dfilters[f]->custom), |
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dfilters[f]->name, dfilters[f]->body); |
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} |
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} |
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|
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|
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/* |
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* Adds to IMAP SEARCH command all the ALLOW type filters. |
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*/ |
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void allow_filters(char *command, char *key) |
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{ |
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int f = 0; |
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int len; |
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|
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if (afilcnt > 0) { |
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while (f < (afilcnt - 1)) { |
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len = strlen(command); |
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snprintf(command + len, BIG_COMMAND_MAX - len, |
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" %s %s%s \"%s\"", key, |
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custom_header(afilters[f]->custom), |
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afilters[f]->name, afilters[f]->body); |
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f++; |
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} |
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|
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len = strlen(command); |
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snprintf(command + len, BIG_COMMAND_MAX - len, " %s%s%s \"%s\"", |
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(!strncmp(key, "NOT", 3) ? "NOT " : ""), |
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custom_header(afilters[f]->custom), |
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afilters[f]->name, afilters[f]->body); |
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} |
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} |
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|
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|
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/* |
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* Convert the string with the UID's of the messages to be deleted to |
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* integers, send the appropriate command and maybe print some headers |
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* of the "to be deleted" message. |
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*/ |
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void delete_messages(char *unwanted) |
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{ |
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unsigned long int messg; |
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char headers[HEADERS_MAX]; |
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|
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do { |
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messg = strtoul(unwanted, &unwanted, 0); |
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|
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if (options & OPTION_SHOW_HEADERS) { |
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imap_fetch(messg, headers); |
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|
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if (!(options & OPTION_DETAILS_QUITE)) |
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printf("Deleting message:\n%s", headers); |
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|
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if (!(options & OPTION_TEST_MODE)) |
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log_info("%s", headers); |
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} |
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|
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if (!(options & OPTION_TEST_MODE)) |
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imap_store(messg); |
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|
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} while (*unwanted); |
| 337 |
} |
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