1 /******************************************************************************/
2 /* pfixtools: a collection of postfix related tools */
4 /* ________________________________________________________________________ */
6 /* Redistribution and use in source and binary forms, with or without */
7 /* modification, are permitted provided that the following conditions */
10 /* 1. Redistributions of source code must retain the above copyright */
11 /* notice, this list of conditions and the following disclaimer. */
12 /* 2. Redistributions in binary form must reproduce the above copyright */
13 /* notice, this list of conditions and the following disclaimer in the */
14 /* documentation and/or other materials provided with the distribution. */
15 /* 3. The names of its contributors may not be used to endorse or promote */
16 /* products derived from this software without specific prior written */
19 /* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND */
20 /* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE */
21 /* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
22 /* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS */
23 /* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR */
24 /* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF */
25 /* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS */
26 /* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */
27 /* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) */
28 /* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF */
29 /* THE POSSIBILITY OF SUCH DAMAGE. */
30 /******************************************************************************/
33 * Copyright © 2007 Pierre Habouzit
34 * Copyright © 2008 Florent Bruneau
38 #include "policy_tokens.h"
41 bool query_parse(query_t *query, char *p)
43 #define PARSE_CHECK(expr, error, ...) \
46 err(error, ##__VA_ARGS__); \
52 query->state = SMTP_UNKNOWN;
59 p = strchr(k = p, '=');
60 PARSE_CHECK(p, "could not find '=' in line");
61 for (klen = p - k; klen && isblank(k[klen]); klen--);
66 p = strchr(v = p, '\n');
67 PARSE_CHECK(p, "could not find final \\n in line");
68 for (vlen = p - v; vlen && isblank(v[vlen]); vlen--);
71 vtk = policy_tokenize(v, vlen);
72 switch (policy_tokenize(k, klen)) {
73 #define CASE(up, low) case PTK_##up: query->low = v; v[vlen] = '\0'; break;
74 CASE(HELO_NAME, helo_name);
75 CASE(QUEUE_ID, queue_id);
76 CASE(RECIPIENT_COUNT, recipient_count);
77 CASE(CLIENT_ADDRESS, client_address);
78 CASE(CLIENT_NAME, client_name);
79 CASE(REVERSE_CLIENT_NAME, reverse_client_name);
80 CASE(INSTANCE, instance);
81 CASE(SASL_METHOD, sasl_method);
82 CASE(SASL_USERNAME, sasl_username);
83 CASE(SASL_SENDER, sasl_sender);
85 CASE(CCERT_SUBJECT, ccert_subject);
86 CASE(CCERT_ISSUER, ccert_issuer);
87 CASE(CCERT_FINGERPRINT, ccert_fingerprint);
88 CASE(ENCRYPTION_PROTOCOL, encryption_protocol);
89 CASE(ENCRYPTION_CIPHER, encryption_cipher);
90 CASE(ENCRYPTION_KEYSIZE, encryption_keysize);
91 CASE(ETRN_DOMAIN, etrn_domain);
98 query->sender_domain = memchr(query->sender, '@', vlen);
99 if (query->sender_domain != NULL) {
100 ++query->sender_domain;
105 query->recipient = v;
107 query->recipient_domain = memchr(query->recipient, '@', vlen);
108 if (query->recipient_domain != NULL) {
109 ++query->recipient_domain;
114 PARSE_CHECK(vtk == PTK_SMTPD_ACCESS_POLICY,
115 "unexpected `request' value: %.*s", vlen, v);
118 case PTK_PROTOCOL_NAME:
119 PARSE_CHECK(vtk == PTK_SMTP || vtk == PTK_ESMTP,
120 "unexpected `protocol_name' value: %.*s", vlen, v);
121 query->esmtp = vtk == PTK_ESMTP;
124 case PTK_PROTOCOL_STATE:
126 #define CASE(name) case PTK_##name: query->state = SMTP_##name; break;
133 CASE(END_OF_MESSAGE);
137 PARSE_CHECK(false, "unexpected `protocol_state` value: %.*s",
144 warn("unexpected key, skipped: %.*s", klen, k);
149 return query->state != SMTP_UNKNOWN;
153 const char *query_field_for_id(const query_t *query, postlicyd_token id)
156 #define CASE(Up, Low) \
157 case PTK_ ## Up: return query->Low;
158 CASE(HELO_NAME, helo_name)
159 CASE(QUEUE_ID, queue_id)
161 CASE(SENDER_DOMAIN, sender_domain)
162 CASE(RECIPIENT, recipient)
163 CASE(RECIPIENT_DOMAIN, recipient_domain)
164 CASE(RECIPIENT_COUNT, recipient_count)
165 CASE(CLIENT_ADDRESS, client_address)
166 CASE(CLIENT_NAME, client_name)
167 CASE(REVERSE_CLIENT_NAME, reverse_client_name)
168 CASE(INSTANCE, instance)
169 CASE(SASL_METHOD, sasl_method)
170 CASE(SASL_USERNAME, sasl_username)
171 CASE(SASL_SENDER, sasl_sender)
173 CASE(CCERT_SUBJECT, ccert_subject)
174 CASE(CCERT_ISSUER, ccert_issuer)
175 CASE(CCERT_FINGERPRINT, ccert_fingerprint)
176 CASE(ENCRYPTION_PROTOCOL, encryption_protocol)
177 CASE(ENCRYPTION_CIPHER, encryption_cipher)
178 CASE(ENCRYPTION_KEYSIZE, encryption_keysize)
179 CASE(ETRN_DOMAIN, etrn_domain)
182 default: return NULL;
186 const char *query_field_for_name(const query_t *query, const char *name)
188 postlicyd_token id = policy_tokenize(name, strlen(name));
189 if (id == PTK_UNKNOWN) {
190 warn("unknown query field %s", name);
193 return query_field_for_id(query, id);
196 ssize_t query_format(char *dest, size_t len, const char *fmt, const query_t *query)
200 const char *end = fmt + m_strlen(fmt);
202 #define WRITE(Src, Len) \
204 size_t __len = (Len); \
205 if (written < len) { \
206 size_t __to_write = MIN(len - written - 1, __len); \
207 memcpy(dest + written, (Src), __to_write); \
208 written += __to_write; \
212 while (*fmt != '\0') {
213 const char *next_format = strstr(fmt, "${");
214 if (next_format == NULL) {
217 WRITE(fmt, next_format - fmt);
221 next_format = strchr(fmt, '}');
222 if (next_format == NULL) {
226 postlicyd_token tok = policy_tokenize(fmt, next_format - fmt);
227 if (tok == PTK_UNKNOWN) {
228 warn("unknown field name \"%.*s\"", (int)(next_format - fmt), fmt);
230 const char *field = query == NULL ? NULL : query_field_for_id(query, tok);
234 WRITE(field, m_strlen(field));
236 fmt = next_format + 1;
240 if (written > 0 && len > 0) {
241 dest[written] = '\0';