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lefcha |
1.1 |
#include <stdio.h> |
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#include <string.h> |
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#include "config.h" |
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#include "imapfilter.h" |
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#include "account.h" |
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#include "filter.h" |
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lefcha |
1.7 |
extern options_t opts; |
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extern connection_t connpri, connaux; |
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lefcha |
1.1 |
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int match_filter(filter_t * filter, char **mesgs); |
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lefcha |
1.6 |
char *generate_filter_and(mask_t * mask, unsigned int masknum, unsigned int masklen); |
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char *generate_filter_or(mask_t * mask, unsigned int masknum, unsigned int masklen); |
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lefcha |
1.2 |
char *normalize_mask(char *body); |
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void convert_date(char *body); |
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lefcha |
1.1 |
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void empty_fifo(mask_t ** mfifo); |
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void queue_fifo(mask_t ** mfifo, mask_t * mask); |
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mask_t *dequeue_fifo(mask_t ** mfifo); |
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/* |
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* Match and apply filters assigned to a mailbox. |
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*/ |
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int |
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apply_filters(char *mbox, filter_t ** filters) |
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{ |
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int i; |
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char *mesgs; |
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for (i = 0; filters[i] != NULL; i++) { |
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mesgs = NULL; |
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if (match_filter(filters[i], &mesgs)) |
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continue; |
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log_info(LOG_FILTER, filters[i]->key); |
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apply_action(mbox, mesgs, &(filters[i]->action.type), |
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filters[i]->action.raccount, filters[i]->action.destmbox, |
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&filters[i]->action.msgflags, filters[i]->action.args); |
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xfree(mesgs); |
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} |
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return 0; |
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} |
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/* |
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* Generate the search request by the masks of the filter and try to |
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* match the generated filter. |
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*/ |
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int |
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match_filter(filter_t * filter, char **mesgs) |
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{ |
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char *search; |
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if (filter->mode == FILTER_MODE_OR) |
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search = generate_filter_or(filter->masks, filter->masknum, |
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filter->masklen); |
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else |
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search = generate_filter_and(filter->masks, filter->masknum, |
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filter->masklen); |
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lefcha |
1.7 |
response_search(&connpri, imap_search(&connpri, opts.charset, search), |
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lefcha |
1.1 |
mesgs); |
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xfree(search); |
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if (*mesgs == '\0') |
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return 1; |
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return 0; |
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} |
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/* |
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* Generate the filter search command from the masks, assuming that |
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* masks are AND-ed. |
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*/ |
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char * |
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generate_filter_and(mask_t * mask, unsigned int masknum, |
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unsigned int masklen) |
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{ |
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const unsigned int searchbuf = masklen + masknum * 6 + 8; |
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unsigned int len; |
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char *search; |
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mask_t *tmp; |
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len = 0; |
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search = (char *)xmalloc(sizeof(char) * searchbuf); |
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search[0] = '\0'; |
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tmp = mask; |
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if (tmp == NULL) { |
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strncat(search, "ALL ", searchbuf - len - 1); |
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len += 4; |
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} else |
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while ((tmp = tmp->next) != NULL) { |
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if (tmp->type != MASK_TYPE_OR) { |
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strncat(search, "ALL ", searchbuf - len - 1); |
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len += 4; |
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break; |
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} |
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} |
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tmp = NULL; |
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while (mask != NULL) { |
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tmp = mask; |
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mask = mask->next; |
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if (mask != NULL && mask->type == MASK_TYPE_OR) { |
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strncat(search, "OR (", searchbuf - len - 1); |
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len += 4; |
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lefcha |
1.2 |
strncat(search, normalize_mask(tmp->body), |
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searchbuf - len - 1); |
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lefcha |
1.1 |
len = strlen(search); |
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search[len] = ' '; |
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search[++len] = '\0'; |
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search[len - 1] = ')'; |
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search[len] = ' '; |
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search[++len] = '\0'; |
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if (mask->next == NULL || |
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mask->next->type != MASK_TYPE_OR) { |
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search[len] = '('; |
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search[++len] = '\0'; |
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lefcha |
1.2 |
strncat(search, normalize_mask(mask->body), |
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lefcha |
1.1 |
searchbuf - len - 1); |
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len = strlen(search); |
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search[len] = ')'; |
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search[++len] = ' '; |
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search[++len] = '\0'; |
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mask = mask->next; |
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} |
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} else { |
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lefcha |
1.2 |
strncat(search, normalize_mask(tmp->body), |
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searchbuf - len - 1); |
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lefcha |
1.1 |
len = strlen(search); |
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search[len] = ' '; |
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search[++len] = '\0'; |
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} |
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} |
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search[len - 1] = '\0'; |
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return search; |
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} |
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/* |
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* Generate the filter search command from the masks, assuming that |
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* masks are OR-ed. |
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*/ |
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char * |
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generate_filter_or(mask_t * mask, unsigned int masknum, |
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unsigned int masklen) |
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{ |
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const unsigned int searchbuf = masklen + masknum * 6 + 8; |
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unsigned int len; |
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char *search; |
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mask_t **mfifo; /* Mailbox FIFO queue. */ |
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mask_t *mf; /* Mask returned from FIFO. */ |
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len = 0; |
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search = (char *)xmalloc(sizeof(char) * searchbuf); |
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mfifo = (mask_t **) xmalloc(sizeof(mask_t *) * (masknum + 1)); |
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search[0] = '\0'; |
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empty_fifo(mfifo); |
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strncat(search, "ALL ", searchbuf - len - 1); |
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len += 4; |
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while (mask != NULL) { |
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queue_fifo(mfifo, mask); |
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mask = mask->next; |
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while (mask != NULL && mask->type == MASK_TYPE_AND) { |
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queue_fifo(mfifo, mask); |
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mask = mask->next; |
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} |
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if (mask != NULL) { |
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if (len == 4 && search[0] == 'A') { |
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search[0] = '\0'; |
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len = 0; |
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} |
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strncat(search, "OR ", searchbuf - len - 1); |
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len += 3; |
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} |
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if (search[0] != 'A') { |
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search[len] = '('; |
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search[++len] = '\0'; |
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} |
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while ((mf = dequeue_fifo(mfifo)) != NULL) { |
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lefcha |
1.2 |
strncat(search, normalize_mask(mf->body), searchbuf - len - 1); |
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lefcha |
1.1 |
len = strlen(search); |
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search[len] = ' '; |
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search[++len] = '\0'; |
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} |
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if (strchr(search, '(')) { |
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search[len - 1] = ')'; |
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search[len] = ' '; |
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search[++len] = '\0'; |
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} |
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empty_fifo(mfifo); |
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} |
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search[len - 1] = '\0'; |
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xfree(mfifo); |
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return search; |
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} |
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/* |
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lefcha |
1.2 |
* Make any necessary conversions to the mask body before sending it to server. |
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*/ |
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char * |
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normalize_mask(char *body) |
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{ |
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static char nb[MASK_BODY_LEN]; |
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if (strstr(body, "OLDER") || |
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strstr(body, "NEWER")) { |
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xstrncpy(nb, body, MASK_BODY_LEN - 1); |
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convert_date(nb); |
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return nb; |
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} |
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return body; |
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} |
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/* |
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* Converts masks related to date filtering, because IMAP servers do not |
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* understand for example "OLDER 3", but "BEFORE 18-Oct-2001" (if |
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* hypothetically current date was 21-Oct-2001). |
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*/ |
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void |
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convert_date(char *body) |
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{ |
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char *cp, *c; |
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char s[16]; |
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time_t te; |
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struct tm *tl; |
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cp = xstrdup(body); |
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body[0] = '\0'; |
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if (strstr(cp, "NOT")) |
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strncat(body, "NOT ", 4); |
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if ((c = strstr(cp, "OLDER"))) |
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strncat(body, "BEFORE ", 7); |
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else if ((c = strstr(cp, "NEWER"))) |
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strncat(body, "SINCE ", 6); |
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c += 6; |
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te = time(NULL) - (time_t) (strtoul(c, NULL, 10) * 24 * 60 * 60); |
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tl = localtime(&te); |
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if (strftime(s, 15, "%d-%b-%Y", tl)) |
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strncat(body, s, 15); |
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xfree(cp); |
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} |
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/* |
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lefcha |
1.1 |
* Empty the FIFO inventory. |
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*/ |
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void |
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empty_fifo(mask_t ** mfifo) |
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{ |
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mfifo[0] = NULL; |
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queue_fifo(NULL, NULL); |
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dequeue_fifo(NULL); |
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} |
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/* |
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* Add item to FIFO inventory. |
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*/ |
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void |
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queue_fifo(mask_t ** mfifo, mask_t * mask) |
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{ |
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static unsigned int i; |
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if (mfifo == NULL) { |
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i = 0; |
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return; |
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} |
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mfifo[i++] = mask; |
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mfifo[i] = NULL; |
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} |
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/* |
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* Get next item from FIFO inventory. |
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*/ |
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mask_t * |
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dequeue_fifo(mask_t ** mfifo) |
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{ |
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static unsigned int j; |
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if (mfifo == NULL) { |
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j = 0; |
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return NULL; |
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} |
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return mfifo[j++]; |
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} |