Commit | Line | Data |
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f7b63901 | 1 | /* $Cambridge: exim/src/src/spool_mbox.c,v 1.3 2004/12/17 14:52:44 ph10 Exp $ */ |
8523533c TK |
2 | |
3 | /************************************************* | |
4 | * Exim - an Internet mail transport agent * | |
5 | *************************************************/ | |
6 | ||
7 | /* Copyright (c) Tom Kistner <tom@duncanthrax.net> 2003-???? */ | |
8 | /* License: GPL */ | |
9 | ||
10 | /* Code for setting up a MBOX style spool file inside a /scan/<msgid> | |
11 | sub directory of exim's spool directory. */ | |
12 | ||
13 | #include "exim.h" | |
14 | #ifdef WITH_CONTENT_SCAN | |
15 | ||
16 | /* externals, we must reset them on unspooling */ | |
17 | #ifdef WITH_OLD_DEMIME | |
18 | extern int demime_ok; | |
19 | extern struct file_extension *file_extensions; | |
20 | #endif | |
21 | ||
22 | extern int malware_ok; | |
23 | extern int spam_ok; | |
24 | ||
25 | int spool_mbox_ok = 0; | |
26 | uschar spooled_message_id[17]; | |
27 | ||
28 | /* returns a pointer to the FILE, and puts the size in bytes into mbox_file_size */ | |
29 | ||
f7b63901 | 30 | FILE *spool_mbox(unsigned long *mbox_file_size) { |
8523533c TK |
31 | uschar mbox_path[1024]; |
32 | uschar message_subdir[2]; | |
33 | uschar data_buffer[65535]; | |
34 | FILE *mbox_file; | |
35 | FILE *data_file = NULL; | |
36 | header_line *my_headerlist; | |
37 | struct stat statbuf; | |
38 | int i,j; | |
39 | ||
40 | if (!spool_mbox_ok) { | |
41 | /* create scan directory, if not present */ | |
42 | if (!directory_make(spool_directory, US "scan", 0750, FALSE)) { | |
43 | debug_printf("unable to create directory: %s/scan\n", spool_directory); | |
44 | return NULL; | |
45 | }; | |
46 | ||
47 | /* create temp directory inside scan dir */ | |
48 | snprintf(CS mbox_path, 1024, "%s/scan/%s", spool_directory, message_id); | |
49 | if (!directory_make(NULL, mbox_path, 0750, FALSE)) { | |
50 | debug_printf("unable to create directory: %s/scan/%s\n", spool_directory, message_id); | |
51 | return NULL; | |
52 | }; | |
53 | ||
54 | /* open [message_id].eml file for writing */ | |
55 | snprintf(CS mbox_path, 1024, "%s/scan/%s/%s.eml", spool_directory, message_id, message_id); | |
56 | mbox_file = Ufopen(mbox_path,"w"); | |
57 | ||
58 | if (mbox_file == NULL) { | |
59 | debug_printf("unable to open file for writing: %s\n", mbox_path); | |
60 | return NULL; | |
61 | }; | |
62 | ||
63 | /* write all header lines to mbox file */ | |
64 | my_headerlist = header_list; | |
65 | while (my_headerlist != NULL) { | |
66 | ||
67 | /* skip deleted headers */ | |
68 | if (my_headerlist->type == '*') { | |
69 | my_headerlist = my_headerlist->next; | |
70 | continue; | |
71 | }; | |
72 | ||
73 | i = fwrite(my_headerlist->text, 1, my_headerlist->slen, mbox_file); | |
74 | if (i != my_headerlist->slen) { | |
75 | debug_printf("error/short write on writing in: %s", mbox_path); | |
76 | fclose(mbox_file); | |
77 | return NULL; | |
78 | }; | |
79 | ||
80 | my_headerlist = my_headerlist->next; | |
81 | }; | |
82 | ||
83 | /* copy body file */ | |
84 | message_subdir[1] = '\0'; | |
85 | for (i = 0; i < 2; i++) { | |
86 | message_subdir[0] = (split_spool_directory == (i == 0))? message_id[5] : 0; | |
87 | sprintf(CS mbox_path, "%s/input/%s/%s-D", spool_directory, message_subdir, message_id); | |
88 | data_file = Ufopen(mbox_path,"r"); | |
89 | if (data_file != NULL) | |
90 | break; | |
91 | }; | |
92 | ||
93 | fread(data_buffer, 1, 18, data_file); | |
94 | ||
95 | do { | |
96 | j = fread(data_buffer, 1, sizeof(data_buffer), data_file); | |
97 | if (j > 0) { | |
98 | i = fwrite(data_buffer, 1, j, mbox_file); | |
99 | if (i != j) { | |
100 | debug_printf("error/short write on writing in: %s", mbox_path); | |
101 | fclose(mbox_file); | |
102 | fclose(data_file); | |
103 | return NULL; | |
104 | }; | |
105 | }; | |
106 | } while (j > 0); | |
107 | ||
108 | fclose(data_file); | |
109 | fclose(mbox_file); | |
110 | Ustrcpy(spooled_message_id, message_id); | |
111 | spool_mbox_ok = 1; | |
112 | }; | |
113 | ||
114 | snprintf(CS mbox_path, 1024, "%s/scan/%s/%s.eml", spool_directory, message_id, message_id); | |
115 | ||
116 | /* get the size of the mbox message */ | |
117 | stat(CS mbox_path, &statbuf); | |
118 | *mbox_file_size = statbuf.st_size; | |
119 | ||
120 | /* open [message_id].eml file for reading */ | |
121 | mbox_file = Ufopen(mbox_path,"r"); | |
122 | ||
123 | return mbox_file; | |
124 | } | |
125 | ||
126 | /* remove mbox spool file, demimed files and temp directory */ | |
127 | void unspool_mbox(void) { | |
128 | ||
129 | /* reset all exiscan state variables */ | |
130 | #ifdef WITH_OLD_DEMIME | |
131 | demime_ok = 0; | |
132 | demime_errorlevel = 0; | |
133 | demime_reason = NULL; | |
134 | file_extensions = NULL; | |
135 | #endif | |
136 | ||
137 | spam_ok = 0; | |
138 | malware_ok = 0; | |
139 | ||
140 | if (spool_mbox_ok) { | |
141 | ||
142 | spool_mbox_ok = 0; | |
143 | ||
144 | if (!no_mbox_unspool) { | |
145 | uschar mbox_path[1024]; | |
146 | uschar file_path[1024]; | |
147 | int n; | |
148 | struct dirent *entry; | |
149 | DIR *tempdir; | |
150 | ||
151 | snprintf(CS mbox_path, 1024, "%s/scan/%s", spool_directory, spooled_message_id); | |
f7b63901 PH |
152 | |
153 | tempdir = opendir(CS mbox_path); | |
154 | /* loop thru dir & delete entries */ | |
155 | n = 0; | |
156 | do { | |
157 | entry = readdir(tempdir); | |
158 | if (entry == NULL) break; | |
159 | snprintf(CS file_path, 1024,"%s/scan/%s/%s", spool_directory, spooled_message_id, entry->d_name); | |
160 | if ( (Ustrcmp(entry->d_name,"..") != 0) && (Ustrcmp(entry->d_name,".") != 0) ) { | |
161 | debug_printf("unspool_mbox(): unlinking '%s'\n", file_path); | |
8523533c TK |
162 | n = unlink(CS file_path); |
163 | }; | |
f7b63901 PH |
164 | } while (n > -1); |
165 | ||
166 | closedir(tempdir); | |
167 | ||
168 | /* remove directory */ | |
169 | n = rmdir(CS mbox_path); | |
8523533c TK |
170 | }; |
171 | }; | |
172 | } | |
173 | ||
174 | #endif |