imapfilter/imapfilter/data.c

#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <regex.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>
#include <sys/stat.h>
#include <ctype.h>

#include "config.h"
#include "imapfilter.h"
#include "data.h"


account_t *accounts = NULL;     /* First node of accounts linked list. */
filter_t *filters = NULL;       /* First node of filters tree. */

static mboxgrp_t *mboxgrps = NULL;      /* First node of mailbox-groups
                                           tree. */

static account_t *cur_acct = NULL;      /* Current account. */
static filter_t *cur_fltr = NULL;       /* Current filter. */


/*
 * Set new account's variables to safe values.
 */
void init_account(account_t * node)
{
    node->next = NULL;
    node->server[0] = node->username[0] = node->password[0] = 0;
    node->port = 143;
    node->mboxes = NULL;
}


/*
 * Append account node to linked list.
 */
void append_account(account_t * node)
{
    account_t *pos;
    account_t **app;

    APPEND_LINKED_LIST(accounts, node, pos, app);
}


/*
 * A new account entry was declared. Create it and set it's variables
 * accordingly.
 */
int set_account(char *line, regmatch_t * match)
{
    int s;
    char p[6];
    account_t *node;

    node = (account_t *) create_node(sizeof(account_t));

    init_account(node);

    strncat(node->username, line + match[1].rm_so,
            min(match[1].rm_eo - match[1].rm_so, USERNAME_LEN - 1));
    if (strchr(node->username, '%'))
        if (string_decode(node->username))
            return ERROR_CONFIG_PARSE;
#ifdef DEBUG
    printf("debug: USERNAME: '%s'\n", node->username);
#endif

    strncat(node->password, line + match[2].rm_so,
            min(match[2].rm_eo - match[2].rm_so, PASSWORD_LEN - 1));
    if (strchr(node->password, '%'))
        if (string_decode(node->password))
            return ERROR_CONFIG_PARSE;
#ifdef DEBUG
    printf("debug: PASSWORD: '%s'\n", node->password);
#endif

    strncat(node->server, line + match[3].rm_so,
            min(match[3].rm_eo - match[3].rm_so, SERVER_LEN - 1));
#ifdef DEBUG
    printf("debug: SERVER: '%s'\n", node->server);
#endif

    if (match[4].rm_so != -1) {
        s = min(match[4].rm_eo - match[4].rm_so - 1, 5);
        strncpy(p, line + match[4].rm_so + 1, s);
        p[s] = 0;
        node->port = strtoul(p, NULL, 10);
#ifdef DEBUG
        printf("debug: PORT: %d\n", node->port);
#endif
    }
    append_account(node);
    cur_acct = node;

    return 0;
}


/*
 * Set new mailbox-group's variables to safe values.
 */
void init_mboxgrp(mboxgrp_t * node)
{
    node->left = node->right = NULL;
    node->key[0] = 0;
    node->mboxes[0] = NULL;
}


/*
 * Insert mailbox-group node in tree.
 */
void insert_mboxgrp(mboxgrp_t * node)
{
    int cmp;
    mboxgrp_t *pos;
    mboxgrp_t **ins;

    INSERT_TREE(mboxgrps, node, pos, ins, cmp);
}


/*
 * A new mailbox-group entry was declared. Create it and set it's variables
 * accordingly.
 */
int set_mboxgrp(char *line, regmatch_t * match)
{
    mboxgrp_t *node;
    char mboxs[LINE_MAX];

    mboxs[0] = 0;

    if (!accounts)
        return ERROR_CONFIG_PARSE;

    node = (mboxgrp_t *) create_node(sizeof(mboxgrp_t));

    init_mboxgrp(node);

    strncat(node->key, line + match[1].rm_so,
            min(match[1].rm_eo - match[1].rm_so, KEY_LEN - 1));

#ifdef DEBUG
    printf("debug: FOLDER: '%s'\n", node->key);
#endif

    strncat(mboxs, line + match[2].rm_so,
            min(match[2].rm_eo - match[2].rm_so, LINE_MAX - 1));

    process_mboxgrp(node, mboxs);

    insert_mboxgrp(node);

    return 0;
}


/*
 * Calls set_mbox() in order to create mailboxes that are part of
 * the mailbox-group.
 */
void process_mboxgrp(mboxgrp_t * node, char *mboxs)
{
    int i = 0;
    const char *delim = ",";
    char *tok;

    while (i < MBOXGRP_MBOXES_MAX - 1 && (tok = strsep(&mboxs, delim))) {
        node->mboxes[i] = (mbox_t *) set_mbox(tok);
        node->mboxes[++i] = NULL;
    }
}


/*
 * Find in the mailbox-group tree, the node with the specified key,
 * and return a pointer to it.
 */
mboxgrp_t *find_mboxgrp(char *key)
{
    int cmp;
    mboxgrp_t *pos;

    FIND_TREE(mboxgrps, key, pos, cmp);
}


/*
 * Set new mailbox's variables to safe values.
 */
void init_mbox(mbox_t * node)
{
    node->next = NULL;
    node->name[0] = 0;
    node->filters[0] = NULL;
}


/*
 * Append mailbox node to linked list.
 */
void append_mbox(mbox_t * node)
{
    mbox_t *pos;
    mbox_t **ins;

    APPEND_LINKED_LIST(cur_acct->mboxes, node, pos, ins);
}


/*
 * A new mailbox was declared, create it and set it's variables accordingly.
 */
mbox_t *set_mbox(char *name)
{
    mbox_t *node;

    node = (mbox_t *) create_node(sizeof(mbox_t));

    init_mbox(node);

    strncat(node->name, name, min(strlen(name), MBOX_NAME_LEN - 1));

#ifdef DEBUG
    printf("debug: MBOX: '%s'\n", node->name);
#endif

    append_mbox(node);

    return node;
}


/*
 * Set new filter's variables to safe values.
 */
void init_filter(filter_t * node)
{
    node->left = node->right = NULL;
    node->key[0] = 0;
    node->mode = FILTER_MODE_AND;
    node->action.type = 0;
    node->action.destmbox[0] = node->action.args[0] = 0;
    node->masks = NULL;
    node->masknum = node->masklen = 0;
}


/*
 * Insert filter node to tree.
 */
void insert_filter(filter_t * node)
{
    int cmp;
    filter_t *pos;
    filter_t **ins;

    INSERT_TREE(filters, node, pos, ins, cmp);
}


/*
 * A filter entry was declared, create it and set it's variables accordingly.
 */
int set_filter(char *line, regmatch_t * match)
{
    filter_t *node;

    if (cur_fltr && !cur_fltr->action.type)
        return ERROR_CONFIG_PARSE;

    node = (filter_t *) create_node(sizeof(filter_t));

    init_filter(node);

    strncat(node->key, line + match[1].rm_so,
            min(match[1].rm_eo - match[1].rm_so, KEY_LEN - 1));

    if (match[2].rm_so != -1) {
        if (!strncasecmp(line + match[2].rm_so + 1, "or", 2))
            node->mode = FILTER_MODE_OR;
        else
            node->mode = FILTER_MODE_AND;
    }
#ifdef DEBUG
    printf("debug: FILTER: '%s' %s\n", node->key,
           (node->mode == FILTER_MODE_OR ? "OR" : "AND"));
#endif

    insert_filter(node);
    cur_fltr = node;

    return 0;
}


/*
 * Find in the filter tree, the node with the specified key and
 * return a pointer to it.
 */
filter_t *find_filter(char *key)
{
    int cmp;
    filter_t *pos;

    FIND_TREE(filters, key, pos, cmp);
}


/*
 * Assign an action to the last declared filter.
 */
int set_action(char *line, regmatch_t * match)
{
    if (!cur_fltr)
        return ERROR_CONFIG_PARSE;

    if (!strncasecmp(line + match[1].rm_so, "delete", 6))
        cur_fltr->action.type = FILTER_ACTION_DELETE;
    else if (!strncasecmp(line + match[1].rm_so, "copy", 4)) {
        cur_fltr->action.type = FILTER_ACTION_COPY;
        strncat(cur_fltr->action.destmbox, line + match[2].rm_so,
                min(match[2].rm_eo - match[2].rm_so, MBOX_NAME_LEN - 1));
    } else if (!strncasecmp(line + match[1].rm_so, "move", 4)) {
        cur_fltr->action.type = FILTER_ACTION_MOVE;
        strncat(cur_fltr->action.destmbox, line + match[3].rm_so,
                min(match[3].rm_eo - match[3].rm_so, MBOX_NAME_LEN - 1));
    } else if (!strncasecmp(line + match[1].rm_so, "list", 4))
        cur_fltr->action.type = FILTER_ACTION_LIST;

    if (match[4].rm_so != -1)
        strncat(cur_fltr->action.args, line + match[4].rm_so,
                min(match[4].rm_eo - match[4].rm_so, ARGS_LEN - 1));

    return 0;

}


/*
 * Set new mask's variables to safe values.
 */
void init_mask(mask_t * node)
{
    node->next = NULL;
    node->body[0] = 0;
    node->type = 0;
}


/*
 * Append mask node to linked list.
 */
void append_mask(mask_t * node)
{
    mask_t *pos;
    mask_t **app;

    APPEND_LINKED_LIST(cur_fltr->masks, node, pos, app);
}


/*
 * A new mask entry was declared, create it and set it's
 * variables accordingly.
 */
int set_mask(char *line, regmatch_t * match)
{
    int s, i, f = 0;
    mask_t *node;
    char *bp;

    if (!cur_fltr)
        return ERROR_CONFIG_PARSE;

    node = (mask_t *) create_node(sizeof(mask_t));

    init_mask(node);

    bp = node->body;

    /* If specified set mask's type. */
    if (match[2].rm_so != -1 && cur_fltr->masks) {
        if (!strncasecmp(line + match[2].rm_so, "or", 2))
            node->type = MASK_TYPE_OR;
        else
            node->type = MASK_TYPE_AND;
    }
    /* Add NOT if specified. */
    if (match[3].rm_so != -1) {
        s = min(match[3].rm_eo - match[3].rm_so,
                MASK_BODY_LEN - (bp - node->body) - 1);
        strncpy(bp, line + match[3].rm_so, s);
        string_upper(bp, s);
        *(bp + s - 1) = ' ';    /* In case it's '\t'. */
        *(bp + s) = 0;
        bp += s;
    }
    /* Keyword of the search key. */
    s = min(match[4].rm_eo - match[4].rm_so,
            MASK_BODY_LEN - (bp - node->body) - 3);
    strncpy(bp, line + match[4].rm_so, s);
    string_upper(bp, s);
    *(bp + s) = 0;
    bp += s;

    /* Body of the search key (string/number). */
    for (i = 5; i <= 6; i++)
        if (match[i].rm_so != -1) {
            *(bp++) = ' ';

            /* Add '"' if not supplied and search key not a number. */
            if (match[6].rm_so == -1 &&
                (strstr(node->body, "LARGER") ||
                 strstr(node->body, "SMALLER")))
                f = 1;
            else if (*(line + match[i].rm_so) != '"')
                *(bp++) = '"';

            *bp = 0;

            s = min(match[i].rm_eo - match[i].rm_so,
                    MASK_BODY_LEN - (bp - node->body) - 2);
            strncpy(bp, line + match[i].rm_so, s);
            *(bp + s) = 0;
            bp += s;

            if (*(line + match[i].rm_so) != '"' && !f)
                *(bp++) = '"';
            *bp = 0;
        }
    append_mask(node);

    cur_fltr->masknum++;
    cur_fltr->masklen += (bp - node->body);


#ifdef DEBUG
    printf("debug: MASK: '%s'\n", node->body);
#endif

    return 0;
}


/*
 * A new job was declared, link filters with mailbox-groups.
 */
int set_job(char *line, regmatch_t * match)
{
    int s;
    const char *delim = ",";
    char *ftok, *gtok, *fltr, *mbgrp, *f, *g;
    filter_t *cf;
    mboxgrp_t *cg;

    if (!accounts || !filters || !cur_fltr->action.type)
        return ERROR_CONFIG_PARSE;

    s = match[1].rm_eo - match[1].rm_so;
    fltr = (char *) xmalloc(s + 1);

    f = strncpy(fltr, line + match[1].rm_so, s);
    f[s] = 0;

    s = match[2].rm_eo - match[2].rm_so;
    mbgrp = (char *) xmalloc(s + 1);

    /* Go through filters. */
    while ((ftok = strsep(&f, delim))) {
        cf = (filter_t *) find_filter(ftok);
        if (!cf)
            return ERROR_CONFIG_PARSE;

        g = strncpy(mbgrp, line + match[2].rm_so, s);
        g[s] = 0;

        /* Go through mailbox groups. */
        while ((gtok = strsep(&g, delim))) {
            cg = (mboxgrp_t *) find_mboxgrp(gtok);
            if (!cg)
                return ERROR_CONFIG_PARSE;
            link_mbox_filter(cf, cg);
        }
    }

    free(fltr);
    free(mbgrp);

    return 0;
}


/*
 * Link a filter with a mailbox.
 */
void link_mbox_filter(filter_t * cf, mboxgrp_t * cg)
{
    int i, j;
    int f;

    for (i = 0; cg->mboxes[i]; i++) {

        for (f = j = 0; cg->mboxes[i]->filters[j]; j++)
            if (j == MBOX_FILTERS_MAX - 1 ||
              !strncmp(cf->key, cg->mboxes[i]->filters[j]->key, KEY_LEN))
                f = 1;

        if (f)
            continue;

        cg->mboxes[i]->filters[j] = cf;
        cg->mboxes[i]->filters[j + 1] = NULL;

    }

#ifdef DEBUG
    printf("debug: JOB: '%s' '%s'\n", cf->key, cg->key);
#endif
}


/*
 * Free allocated memory of data structures that are not needed anymore.
 */
void destroy_data(void)
{
    destroy_mboxgrp(mboxgrps);
}


/*
 * Go through the mailbox-group tree, and free the memory of each node.
 */
void destroy_mboxgrp(mboxgrp_t * node)
{
    if (node->left) {
        destroy_mboxgrp(node->left);
        node->left = NULL;
    }
    if (node->right) {
        destroy_mboxgrp(node->right);
        node->right = NULL;
    }
#ifdef DEBUG
    printf("debug: deleting FOLDER: '%s'\n", node->key);
#endif

    free(node);
}


/*
 * Convert a string of specified size to upper case.
 */
void string_upper(char *str, size_t size)
{
    unsigned int i;

    for (i = 0; i < size; i++, str++)
            *str = toupper(*str);
}


/*
 * Decode the character triplet, consisting of the character '%'
 * followed by two hexadecimal digits to its corresponding ASCII
 * character (described in Section 2.2 of RFC 1738).
 */
int string_decode(char *str)
{
    char *c;
    char hex[3];

    c = str;

    while (*c) {
        if (*c == '%') {
            if (!isxdigit(*(c + 1)) || !isxdigit(*(c + 2)))
                return ERROR_CONFIG_PARSE;

            strncpy(hex, ++c, 2);
            hex[2] = 0;

            if (!isprint(*str = (char) strtoul(hex, NULL, 16)))
                return ERROR_CONFIG_PARSE;

            str++;
            c += 2;
        } else
            *(str++) = *(c++);
    }
    *str = 0;

    return 0;
}
1	#include <stdio.h>
2	#include <errno.h>
3	#include <sys/types.h>
4	#include <regex.h>
5	#include <string.h>
6	#include <stdlib.h>
7	#include <limits.h>
8	#include <sys/stat.h>
9	#include <ctype.h>
10
11	#include "config.h"
12	#include "imapfilter.h"
13	#include "data.h"
14
15
16	account_t accounts = NULL; / First node of accounts linked list. */
17	filter_t filters = NULL; / First node of filters tree. */
18
19	static mboxgrp_t mboxgrps = NULL; / First node of mailbox-groups
20	tree. */
21
22	static account_t cur_acct = NULL; / Current account. */
23	static filter_t cur_fltr = NULL; / Current filter. */
24
25
26	/*
27	* Set new account's variables to safe values.
28	*/
29	void init_account(account_t * node)
30	{
31	node->next = NULL;
32	node->server[0] = node->username[0] = node->password[0] = 0;
33	node->port = 143;
34	node->mboxes = NULL;
35	}
36
37
38	/*
39	* Append account node to linked list.
40	*/
41	void append_account(account_t * node)
42	{
43	account_t *pos;
44	account_t **app;
45
46	APPEND_LINKED_LIST(accounts, node, pos, app);
47	}
48
49
50	/*
51	* A new account entry was declared. Create it and set it's variables
52	* accordingly.
53	*/
54	int set_account(char line, regmatch_t match)
55	{
56	int s;
57	char p[6];
58	account_t *node;
59
60	node = (account_t *) create_node(sizeof(account_t));
61
62	init_account(node);
63
64	strncat(node->username, line + match[1].rm_so,
65	min(match[1].rm_eo - match[1].rm_so, USERNAME_LEN - 1));
66	if (strchr(node->username, '%'))
67	if (string_decode(node->username))
68	return ERROR_CONFIG_PARSE;
69	#ifdef DEBUG
70	printf("debug: USERNAME: '%s'\n", node->username);
71	#endif
72
73	strncat(node->password, line + match[2].rm_so,
74	min(match[2].rm_eo - match[2].rm_so, PASSWORD_LEN - 1));
75	if (strchr(node->password, '%'))
76	if (string_decode(node->password))
77	return ERROR_CONFIG_PARSE;
78	#ifdef DEBUG
79	printf("debug: PASSWORD: '%s'\n", node->password);
80	#endif
81
82	strncat(node->server, line + match[3].rm_so,
83	min(match[3].rm_eo - match[3].rm_so, SERVER_LEN - 1));
84	#ifdef DEBUG
85	printf("debug: SERVER: '%s'\n", node->server);
86	#endif
87
88	if (match[4].rm_so != -1) {
89	s = min(match[4].rm_eo - match[4].rm_so - 1, 5);
90	strncpy(p, line + match[4].rm_so + 1, s);
91	p[s] = 0;
92	node->port = strtoul(p, NULL, 10);
93	#ifdef DEBUG
94	printf("debug: PORT: %d\n", node->port);
95	#endif
96	}
97	append_account(node);
98	cur_acct = node;
99
100	return 0;
101	}
102
103
104	/*
105	* Set new mailbox-group's variables to safe values.
106	*/
107	void init_mboxgrp(mboxgrp_t * node)
108	{
109	node->left = node->right = NULL;
110	node->key[0] = 0;
111	node->mboxes[0] = NULL;
112	}
113
114
115	/*
116	* Insert mailbox-group node in tree.
117	*/
118	void insert_mboxgrp(mboxgrp_t * node)
119	{
120	int cmp;
121	mboxgrp_t *pos;
122	mboxgrp_t **ins;
123
124	INSERT_TREE(mboxgrps, node, pos, ins, cmp);
125	}
126
127
128	/*
129	* A new mailbox-group entry was declared. Create it and set it's variables
130	* accordingly.
131	*/
132	int set_mboxgrp(char line, regmatch_t match)
133	{
134	mboxgrp_t *node;
135	char mboxs[LINE_MAX];
136
137	mboxs[0] = 0;
138
139	if (!accounts)
140	return ERROR_CONFIG_PARSE;
141
142	node = (mboxgrp_t *) create_node(sizeof(mboxgrp_t));
143
144	init_mboxgrp(node);
145
146	strncat(node->key, line + match[1].rm_so,
147	min(match[1].rm_eo - match[1].rm_so, KEY_LEN - 1));
148
149	#ifdef DEBUG
150	printf("debug: FOLDER: '%s'\n", node->key);
151	#endif
152
153	strncat(mboxs, line + match[2].rm_so,
154	min(match[2].rm_eo - match[2].rm_so, LINE_MAX - 1));
155
156	process_mboxgrp(node, mboxs);
157
158	insert_mboxgrp(node);
159
160	return 0;
161	}
162
163
164	/*
165	* Calls set_mbox() in order to create mailboxes that are part of
166	* the mailbox-group.
167	*/
168	void process_mboxgrp(mboxgrp_t * node, char *mboxs)
169	{
170	int i = 0;
171	const char *delim = ",";
172	char *tok;
173
174	while (i < MBOXGRP_MBOXES_MAX - 1 && (tok = strsep(&mboxs, delim))) {
175	node->mboxes[i] = (mbox_t *) set_mbox(tok);
176	node->mboxes[++i] = NULL;
177	}
178	}
179
180
181	/*
182	* Find in the mailbox-group tree, the node with the specified key,
183	* and return a pointer to it.
184	*/
185	mboxgrp_t find_mboxgrp(char key)
186	{
187	int cmp;
188	mboxgrp_t *pos;
189
190	FIND_TREE(mboxgrps, key, pos, cmp);
191	}
192
193
194	/*
195	* Set new mailbox's variables to safe values.
196	*/
197	void init_mbox(mbox_t * node)
198	{
199	node->next = NULL;
200	node->name[0] = 0;
201	node->filters[0] = NULL;
202	}
203
204
205	/*
206	* Append mailbox node to linked list.
207	*/
208	void append_mbox(mbox_t * node)
209	{
210	mbox_t *pos;
211	mbox_t **ins;
212
213	APPEND_LINKED_LIST(cur_acct->mboxes, node, pos, ins);
214	}
215
216
217	/*
218	* A new mailbox was declared, create it and set it's variables accordingly.
219	*/
220	mbox_t set_mbox(char name)
221	{
222	mbox_t *node;
223
224	node = (mbox_t *) create_node(sizeof(mbox_t));
225
226	init_mbox(node);
227
228	strncat(node->name, name, min(strlen(name), MBOX_NAME_LEN - 1));
229
230	#ifdef DEBUG
231	printf("debug: MBOX: '%s'\n", node->name);
232	#endif
233
234	append_mbox(node);
235
236	return node;
237	}
238
239
240	/*
241	* Set new filter's variables to safe values.
242	*/
243	void init_filter(filter_t * node)
244	{
245	node->left = node->right = NULL;
246	node->key[0] = 0;
247	node->mode = FILTER_MODE_AND;
248	node->action.type = 0;
249	node->action.destmbox[0] = node->action.args[0] = 0;
250	node->masks = NULL;
251	node->masknum = node->masklen = 0;
252	}
253
254
255	/*
256	* Insert filter node to tree.
257	*/
258	void insert_filter(filter_t * node)
259	{
260	int cmp;
261	filter_t *pos;
262	filter_t **ins;
263
264	INSERT_TREE(filters, node, pos, ins, cmp);
265	}
266
267
268	/*
269	* A filter entry was declared, create it and set it's variables accordingly.
270	*/
271	int set_filter(char line, regmatch_t match)
272	{
273	filter_t *node;
274
275	if (cur_fltr && !cur_fltr->action.type)
276	return ERROR_CONFIG_PARSE;
277
278	node = (filter_t *) create_node(sizeof(filter_t));
279
280	init_filter(node);
281
282	strncat(node->key, line + match[1].rm_so,
283	min(match[1].rm_eo - match[1].rm_so, KEY_LEN - 1));
284
285	if (match[2].rm_so != -1) {
286	if (!strncasecmp(line + match[2].rm_so + 1, "or", 2))
287	node->mode = FILTER_MODE_OR;
288	else
289	node->mode = FILTER_MODE_AND;
290	}
291	#ifdef DEBUG
292	printf("debug: FILTER: '%s' %s\n", node->key,
293	(node->mode == FILTER_MODE_OR ? "OR" : "AND"));
294	#endif
295
296	insert_filter(node);
297	cur_fltr = node;
298
299	return 0;
300	}
301
302
303	/*
304	* Find in the filter tree, the node with the specified key and
305	* return a pointer to it.
306	*/
307	filter_t find_filter(char key)
308	{
309	int cmp;
310	filter_t *pos;
311
312	FIND_TREE(filters, key, pos, cmp);
313	}
314
315
316	/*
317	* Assign an action to the last declared filter.
318	*/
319	int set_action(char line, regmatch_t match)
320	{
321	if (!cur_fltr)
322	return ERROR_CONFIG_PARSE;
323
324	if (!strncasecmp(line + match[1].rm_so, "delete", 6))
325	cur_fltr->action.type = FILTER_ACTION_DELETE;
326	else if (!strncasecmp(line + match[1].rm_so, "copy", 4)) {
327	cur_fltr->action.type = FILTER_ACTION_COPY;
328	strncat(cur_fltr->action.destmbox, line + match[2].rm_so,
329	min(match[2].rm_eo - match[2].rm_so, MBOX_NAME_LEN - 1));
330	} else if (!strncasecmp(line + match[1].rm_so, "move", 4)) {
331	cur_fltr->action.type = FILTER_ACTION_MOVE;
332	strncat(cur_fltr->action.destmbox, line + match[3].rm_so,
333	min(match[3].rm_eo - match[3].rm_so, MBOX_NAME_LEN - 1));
334	} else if (!strncasecmp(line + match[1].rm_so, "list", 4))
335	cur_fltr->action.type = FILTER_ACTION_LIST;
336
337	if (match[4].rm_so != -1)
338	strncat(cur_fltr->action.args, line + match[4].rm_so,
339	min(match[4].rm_eo - match[4].rm_so, ARGS_LEN - 1));
340
341	return 0;
342
343	}
344
345
346	/*
347	* Set new mask's variables to safe values.
348	*/
349	void init_mask(mask_t * node)
350	{
351	node->next = NULL;
352	node->body[0] = 0;
353	node->type = 0;
354	}
355
356
357	/*
358	* Append mask node to linked list.
359	*/
360	void append_mask(mask_t * node)
361	{
362	mask_t *pos;
363	mask_t **app;
364
365	APPEND_LINKED_LIST(cur_fltr->masks, node, pos, app);
366	}
367
368
369	/*
370	* A new mask entry was declared, create it and set it's
371	* variables accordingly.
372	*/
373	int set_mask(char line, regmatch_t match)
374	{
375	int s, i, f = 0;
376	mask_t *node;
377	char *bp;
378
379	if (!cur_fltr)
380	return ERROR_CONFIG_PARSE;
381
382	node = (mask_t *) create_node(sizeof(mask_t));
383
384	init_mask(node);
385
386	bp = node->body;
387
388	/* If specified set mask's type. */
389	if (match[2].rm_so != -1 && cur_fltr->masks) {
390	if (!strncasecmp(line + match[2].rm_so, "or", 2))
391	node->type = MASK_TYPE_OR;
392	else
393	node->type = MASK_TYPE_AND;
394	}
395	/* Add NOT if specified. */
396	if (match[3].rm_so != -1) {
397	s = min(match[3].rm_eo - match[3].rm_so,
398	MASK_BODY_LEN - (bp - node->body) - 1);
399	strncpy(bp, line + match[3].rm_so, s);
400	string_upper(bp, s);
401	(bp + s - 1) = ' '; / In case it's '\t'. */
402	*(bp + s) = 0;
403	bp += s;
404	}
405	/* Keyword of the search key. */
406	s = min(match[4].rm_eo - match[4].rm_so,
407	MASK_BODY_LEN - (bp - node->body) - 3);
408	strncpy(bp, line + match[4].rm_so, s);
409	string_upper(bp, s);
410	*(bp + s) = 0;
411	bp += s;
412
413	/* Body of the search key (string/number). */
414	for (i = 5; i <= 6; i++)
415	if (match[i].rm_so != -1) {
416	*(bp++) = ' ';
417
418	/* Add '"' if not supplied and search key not a number. */
419	if (match[6].rm_so == -1 &&
420	(strstr(node->body, "LARGER") \|\|
421	strstr(node->body, "SMALLER")))
422	f = 1;
423	else if (*(line + match[i].rm_so) != '"')
424	*(bp++) = '"';
425
426	*bp = 0;
427
428	s = min(match[i].rm_eo - match[i].rm_so,
429	MASK_BODY_LEN - (bp - node->body) - 2);
430	strncpy(bp, line + match[i].rm_so, s);
431	*(bp + s) = 0;
432	bp += s;
433
434	if (*(line + match[i].rm_so) != '"' && !f)
435	*(bp++) = '"';
436	*bp = 0;
437	}
438	append_mask(node);
439
440	cur_fltr->masknum++;
441	cur_fltr->masklen += (bp - node->body);
442
443
444	#ifdef DEBUG
445	printf("debug: MASK: '%s'\n", node->body);
446	#endif
447
448	return 0;
449	}
450
451
452	/*
453	* A new job was declared, link filters with mailbox-groups.
454	*/
455	int set_job(char line, regmatch_t match)
456	{
457	int s;
458	const char *delim = ",";
459	char ftok, gtok, fltr, mbgrp, f, g;
460	filter_t *cf;
461	mboxgrp_t *cg;
462
463	if (!accounts \|\| !filters \|\| !cur_fltr->action.type)
464	return ERROR_CONFIG_PARSE;
465
466	s = match[1].rm_eo - match[1].rm_so;
467	fltr = (char *) xmalloc(s + 1);
468
469	f = strncpy(fltr, line + match[1].rm_so, s);
470	f[s] = 0;
471
472	s = match[2].rm_eo - match[2].rm_so;
473	mbgrp = (char *) xmalloc(s + 1);
474
475	/* Go through filters. */
476	while ((ftok = strsep(&f, delim))) {
477	cf = (filter_t *) find_filter(ftok);
478	if (!cf)
479	return ERROR_CONFIG_PARSE;
480
481	g = strncpy(mbgrp, line + match[2].rm_so, s);
482	g[s] = 0;
483
484	/* Go through mailbox groups. */
485	while ((gtok = strsep(&g, delim))) {
486	cg = (mboxgrp_t *) find_mboxgrp(gtok);
487	if (!cg)
488	return ERROR_CONFIG_PARSE;
489	link_mbox_filter(cf, cg);
490	}
491	}
492
493	free(fltr);
494	free(mbgrp);
495
496	return 0;
497	}
498
499
500	/*
501	* Link a filter with a mailbox.
502	*/
503	void link_mbox_filter(filter_t * cf, mboxgrp_t * cg)
504	{
505	int i, j;
506	int f;
507
508	for (i = 0; cg->mboxes[i]; i++) {
509
510	for (f = j = 0; cg->mboxes[i]->filters[j]; j++)
511	if (j == MBOX_FILTERS_MAX - 1 \|\|
512	!strncmp(cf->key, cg->mboxes[i]->filters[j]->key, KEY_LEN))
513	f = 1;
514
515	if (f)
516	continue;
517
518	cg->mboxes[i]->filters[j] = cf;
519	cg->mboxes[i]->filters[j + 1] = NULL;
520
521	}
522
523	#ifdef DEBUG
524	printf("debug: JOB: '%s' '%s'\n", cf->key, cg->key);
525	#endif
526	}
527
528
529	/*
530	* Free allocated memory of data structures that are not needed anymore.
531	*/
532	void destroy_data(void)
533	{
534	destroy_mboxgrp(mboxgrps);
535	}
536
537
538	/*
539	* Go through the mailbox-group tree, and free the memory of each node.
540	*/
541	void destroy_mboxgrp(mboxgrp_t * node)
542	{
543	if (node->left) {
544	destroy_mboxgrp(node->left);
545	node->left = NULL;
546	}
547	if (node->right) {
548	destroy_mboxgrp(node->right);
549	node->right = NULL;
550	}
551	#ifdef DEBUG
552	printf("debug: deleting FOLDER: '%s'\n", node->key);
553	#endif
554
555	free(node);
556	}
557
558
559	/*
560	* Convert a string of specified size to upper case.
561	*/
562	void string_upper(char *str, size_t size)
563	{
564	unsigned int i;
565
566	for (i = 0; i < size; i++, str++)
567	str = toupper(str);
568	}
569
570
571	/*
572	* Decode the character triplet, consisting of the character '%'
573	* followed by two hexadecimal digits to its corresponding ASCII
574	* character (described in Section 2.2 of RFC 1738).
575	*/
576	int string_decode(char *str)
577	{
578	char *c;
579	char hex[3];
580
581	c = str;
582
583	while (*c) {
584	if (*c == '%') {
585	if (!isxdigit((c + 1)) \|\| !isxdigit((c + 2)))
586	return ERROR_CONFIG_PARSE;
587
588	strncpy(hex, ++c, 2);
589	hex[2] = 0;
590
591	if (!isprint(*str = (char) strtoul(hex, NULL, 16)))
592	return ERROR_CONFIG_PARSE;
593
594	str++;
595	c += 2;
596	} else
597	(str++) = (c++);
598	}
599	*str = 0;
600
601	return 0;
602	}