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750af86e | 1 | /* $Cambridge: exim/src/src/local_scan.h,v 1.5 2005/08/22 10:49:04 ph10 Exp $ */ |
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2 | |
3 | /************************************************* | |
4 | * Exim - an Internet mail transport agent * | |
5 | *************************************************/ | |
6 | ||
c988f1f4 | 7 | /* Copyright (c) University of Cambridge 1995 - 2005 */ |
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8 | /* See the file NOTICE for conditions of use and distribution. */ |
9 | ||
10 | /* This file is the header that is the only Exim header to be included in the | |
11 | source for the local_scan.c() function. It contains definitions that are made | |
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12 | available for use in that function, and which are documented. |
13 | ||
14 | This API is also used for functions called by the ${dlfunc expansion item. */ | |
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15 | |
16 | ||
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17 | /* Some basic types that make some things easier, the Exim configuration |
18 | settings, and the store functions. */ | |
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19 | |
20 | #include <sys/types.h> | |
750af86e | 21 | #include "config.h" |
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22 | #include "mytypes.h" |
23 | #include "store.h" | |
24 | ||
25 | ||
26 | /* The function and its return codes. */ | |
27 | ||
28 | extern int local_scan(int, uschar **); | |
29 | ||
30 | enum { | |
31 | LOCAL_SCAN_ACCEPT, /* Accept */ | |
32 | LOCAL_SCAN_ACCEPT_FREEZE, /* Accept, but freeze */ | |
33 | LOCAL_SCAN_ACCEPT_QUEUE, /* Accept, but no immediate delivery */ | |
34 | LOCAL_SCAN_REJECT, /* Permanent rejection */ | |
35 | LOCAL_SCAN_REJECT_NOLOGHDR, /* Permanent rejection, no log header */ | |
36 | LOCAL_SCAN_TEMPREJECT, /* Temporary rejection */ | |
37 | LOCAL_SCAN_TEMPREJECT_NOLOGHDR /* Temporary rejection, no log header */ | |
38 | }; | |
39 | ||
40 | ||
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41 | /* Functions called by ${dlfunc{file}{func}{arg}...} return one of the five |
42 | status codes defined immediately below. The function's first argument is either | |
43 | the result of expansion, or the error message in case of failure. The second | |
44 | and third arguments are standard argument count and vector, comprising the | |
45 | {arg} values specified in the expansion item. */ | |
46 | ||
47 | typedef int exim_dlfunc_t(uschar **yield, int argc, uschar *argv[]); | |
48 | ||
49 | ||
50 | /* Return codes from the support functions lss_match_xxx(). These are also the | |
51 | codes that dynamically-loaded ${dlfunc functions must return. */ | |
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52 | |
53 | #define OK 0 /* Successful match */ | |
54 | #define DEFER 1 /* Defer - some problem */ | |
55 | #define FAIL 2 /* Matching failed */ | |
56 | #define ERROR 3 /* Internal or config error */ | |
57 | ||
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58 | /* Extra return code for ${dlfunc functions */ |
59 | ||
60 | #define FAIL_FORCED 4 /* "Forced" failure */ | |
61 | ||
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62 | |
63 | /* Available logging destinations */ | |
64 | ||
65 | #define LOG_MAIN 1 /* Write to the main log */ | |
66 | #define LOG_PANIC 2 /* Write to the panic log */ | |
67 | #define LOG_REJECT 16 /* Write to the reject log, with headers */ | |
68 | ||
69 | ||
70 | /* Accessible debugging bits */ | |
71 | ||
72 | #define D_v 0x00000001 | |
73 | #define D_local_scan 0x00000002 | |
74 | ||
75 | ||
76 | /* Option types that can be used for local_scan_options. The boolean ones | |
77 | MUST be last so that they are contiguous with the internal boolean specials. */ | |
78 | ||
79 | enum { opt_stringptr, opt_int, opt_octint, opt_mkint, opt_Kint, opt_fixed, | |
80 | opt_time, opt_bool }; | |
81 | ||
82 | ||
83 | /* The length of message identification strings. This is the id used internally | |
84 | by exim. The external version for use in Received: strings has a leading 'E' | |
85 | added to ensure it starts with a letter. */ | |
86 | ||
87 | #define MESSAGE_ID_LENGTH 16 | |
88 | ||
89 | /* The offset to the start of the data in the data file - this allows for | |
90 | the name of the data file to be present in the first line. */ | |
91 | ||
92 | #define SPOOL_DATA_START_OFFSET (MESSAGE_ID_LENGTH+3) | |
93 | ||
94 | /* Some people (Marc Merlin et al) are maintaining a patch that allows for | |
95 | dynamic local_scan() libraries. This code is not yet in Exim proper, but it | |
96 | helps the maintainers if we keep their ABI version numbers here. This may | |
97 | mutate into more general support later. The major number is increased when the | |
98 | ABI is changed in a non backward compatible way. The minor number is increased | |
99 | each time a new feature is added (in a way that doesn't break backward | |
100 | compatibility). */ | |
101 | ||
102 | #define LOCAL_SCAN_ABI_VERSION_MAJOR 1 | |
103 | #define LOCAL_SCAN_ABI_VERSION_MINOR 0 | |
104 | ||
105 | /* Structure definitions that are documented as visible in the function. */ | |
106 | ||
107 | typedef struct header_line { | |
108 | struct header_line *next; | |
109 | int type; | |
110 | int slen; | |
111 | uschar *text; | |
112 | } header_line; | |
113 | ||
114 | /* Entries in lists options are in this form. */ | |
115 | ||
116 | typedef struct { | |
117 | char *name; | |
118 | int type; | |
119 | void *value; | |
120 | } optionlist; | |
121 | ||
122 | /*Structure for holding information about an envelope address. The errors_to | |
123 | field is always NULL except for one_time aliases that had errors_to on the | |
124 | routers that generated them. */ | |
125 | ||
126 | typedef struct recipient_item { | |
127 | uschar *address; /* the recipient address */ | |
128 | int pno; /* parent number for "one_time" alias, or -1 */ | |
129 | uschar *errors_to; /* the errors_to address or NULL */ | |
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130 | #ifdef EXPERIMENTAL_BRIGHTMAIL |
131 | uschar *bmi_optin; | |
132 | #endif | |
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133 | } recipient_item; |
134 | ||
135 | ||
136 | /* Global variables that are documented as visible in the function. */ | |
137 | ||
138 | extern unsigned int debug_selector; /* Debugging bits */ | |
139 | ||
140 | extern uschar *expand_string_message; /* Error info for failing expansion */ | |
141 | extern uschar *headers_charset; /* Charset for RFC 2047 decoding */ | |
142 | extern header_line *header_last; /* Final header */ | |
143 | extern header_line *header_list; /* First header */ | |
144 | extern BOOL host_checking; /* Set when checking a host */ | |
145 | extern uschar *interface_address; /* Interface for incoming call */ | |
146 | extern int interface_port; /* Port number for incoming call */ | |
147 | extern uschar *message_id; /* Internal id of message being handled */ | |
148 | extern uschar *received_protocol; /* Name of incoming protocol */ | |
149 | extern int recipients_count; /* Number of recipients */ | |
150 | extern recipient_item *recipients_list;/* List of recipient addresses */ | |
151 | extern unsigned char *sender_address; /* Sender address */ | |
152 | extern uschar *sender_host_address; /* IP address of sender, as chars */ | |
153 | extern uschar *sender_host_authenticated; /* Name of authentication mechanism */ | |
154 | extern uschar *sender_host_name; /* Host name from lookup */ | |
155 | extern int sender_host_port; /* Port number of sender */ | |
156 | extern BOOL smtp_batched_input; /* TRUE if SMTP batch (no interaction) */ | |
157 | extern BOOL smtp_input; /* TRUE if input is via SMTP */ | |
158 | ||
159 | ||
160 | /* Functions that are documented as visible in local_scan(). */ | |
161 | ||
162 | extern int child_close(pid_t, int); | |
163 | extern pid_t child_open(uschar **, uschar **, int, int *, int *, BOOL); | |
164 | extern pid_t child_open_exim(int *); | |
165 | extern void debug_printf(char *, ...) PRINTF_FUNCTION; | |
166 | extern uschar *expand_string(uschar *); | |
167 | extern void header_add(int, char *, ...); | |
168 | extern void header_add_at_position(BOOL, uschar *, BOOL, int, char *, ...); | |
169 | extern void header_remove(int, uschar *); | |
170 | extern BOOL header_testname(header_line *, uschar *, int, BOOL); | |
8523533c | 171 | extern BOOL header_testname_incomplete(header_line *, uschar *, int, BOOL); |
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172 | extern void log_write(unsigned int, int, char *format, ...); |
173 | extern int lss_b64decode(uschar *, uschar **); | |
174 | extern uschar *lss_b64encode(uschar *, int); | |
175 | extern int lss_match_domain(uschar *, uschar *); | |
176 | extern int lss_match_local_part(uschar *, uschar *, BOOL); | |
177 | extern int lss_match_address(uschar *, uschar *, BOOL); | |
178 | extern int lss_match_host(uschar *, uschar *, uschar *); | |
179 | extern void receive_add_recipient(uschar *, int); | |
180 | extern BOOL receive_remove_recipient(uschar *); | |
181 | extern uschar *rfc2047_decode(uschar *, BOOL, uschar *, int, int *, uschar **); | |
182 | extern int smtp_fflush(void); | |
183 | extern void smtp_printf(char *, ...) PRINTF_FUNCTION; | |
184 | extern uschar *string_copy(uschar *); | |
185 | extern uschar *string_copyn(uschar *, int); | |
186 | extern uschar *string_sprintf(char *, ...); | |
187 | ||
188 | /* End of local_scan.h */ |