Commit | Line | Data |
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059ec3d9 PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
5 | /* Copyright (c) 1998 Malcolm Beattie */ | |
6 | ||
7 | /* Modified by PH to get rid of the "na" usage, March 1999. | |
8 | Modified further by PH for general tidying for Exim 4. | |
9 | Threaded Perl support added by Stefan Traby, Nov 2002 | |
10 | */ | |
11 | ||
12 | ||
13 | /* This Perl add-on can be distributed under the same terms as Exim itself. */ | |
14 | /* See the file NOTICE for conditions of use and distribution. */ | |
15 | ||
16 | #include "exim.h" | |
17 | ||
18 | #define EXIM_TRUE TRUE | |
19 | #undef TRUE | |
20 | ||
21 | #define EXIM_FALSE FALSE | |
22 | #undef FALSE | |
23 | ||
24 | #define EXIM_DEBUG DEBUG | |
25 | #undef DEBUG | |
26 | ||
27 | #include <EXTERN.h> | |
28 | #include <perl.h> | |
29 | #include <XSUB.h> | |
30 | ||
31 | #ifndef ERRSV | |
32 | #define ERRSV (GvSV(errgv)) | |
33 | #endif | |
34 | ||
35 | /* Some people like very old perl versions, so avoid any build side-effects. */ | |
36 | ||
37 | #ifndef pTHX | |
38 | # define pTHX | |
39 | # define pTHX_ | |
40 | #endif | |
41 | #ifndef EXTERN_C | |
42 | # define EXTERN_C extern | |
43 | #endif | |
44 | ||
45 | EXTERN_C void boot_DynaLoader(pTHX_ CV *cv); | |
46 | ||
47 | ||
48 | static PerlInterpreter *interp_perl = 0; | |
49 | ||
50 | XS(xs_expand_string) | |
51 | { | |
52 | dXSARGS; | |
53 | uschar *str; | |
54 | STRLEN len; | |
55 | ||
56 | if (items != 1) | |
57 | croak("Usage: Exim::expand_string(string)"); | |
58 | ||
59 | str = expand_string(US SvPV(ST(0), len)); | |
60 | ST(0) = sv_newmortal(); | |
61 | if (str != NULL) | |
62 | sv_setpv(ST(0), (const char *) str); | |
63 | else if (!expand_string_forcedfail) | |
64 | croak("syntax error in Exim::expand_string argument: %s", | |
65 | expand_string_message); | |
66 | } | |
67 | ||
68 | XS(xs_debug_write) | |
69 | { | |
70 | dXSARGS; | |
71 | STRLEN len; | |
72 | if (items != 1) | |
73 | croak("Usage: Exim::debug_write(string)"); | |
74 | debug_printf("%s", US SvPV(ST(0), len)); | |
75 | } | |
76 | ||
77 | XS(xs_log_write) | |
78 | { | |
79 | dXSARGS; | |
80 | STRLEN len; | |
81 | if (items != 1) | |
82 | croak("Usage: Exim::log_write(string)"); | |
83 | log_write(0, LOG_MAIN, "%s", US SvPV(ST(0), len)); | |
84 | } | |
85 | ||
86 | static void xs_init(pTHX) | |
87 | { | |
88 | char *file = __FILE__; | |
89 | newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file); | |
90 | newXS("Exim::expand_string", xs_expand_string, file); | |
91 | newXS("Exim::debug_write", xs_debug_write, file); | |
92 | newXS("Exim::log_write", xs_log_write, file); | |
93 | } | |
94 | ||
95 | uschar * | |
96 | init_perl(uschar *startup_code) | |
97 | { | |
98 | static int argc = 2; | |
99 | static char *argv[3] = { "exim-perl", "/dev/null", 0 }; | |
100 | SV *sv; | |
101 | STRLEN len; | |
102 | ||
103 | if (interp_perl) return 0; | |
104 | interp_perl = perl_alloc(); | |
105 | perl_construct(interp_perl); | |
106 | perl_parse(interp_perl, xs_init, argc, argv, 0); | |
107 | perl_run(interp_perl); | |
108 | { | |
109 | dSP; | |
76a2d7ba PH |
110 | |
111 | /*********************************************************************/ | |
112 | /* These lines by PH added to make "warn" output go to the Exim log; I | |
113 | hope this doesn't break anything. */ | |
8e669ac1 | 114 | |
76a2d7ba PH |
115 | sv = newSVpv( |
116 | "$SIG{__WARN__} = sub { my($s) = $_[0];" | |
8e669ac1 | 117 | "$s =~ s/\\n$//;" |
76a2d7ba PH |
118 | "Exim::log_write($s) };", 0); |
119 | PUSHMARK(SP); | |
120 | perl_eval_sv(sv, G_SCALAR|G_DISCARD|G_KEEPERR); | |
121 | SvREFCNT_dec(sv); | |
122 | if (SvTRUE(ERRSV)) return US SvPV(ERRSV, len); | |
123 | /*********************************************************************/ | |
8e669ac1 | 124 | |
059ec3d9 PH |
125 | sv = newSVpv(CS startup_code, 0); |
126 | PUSHMARK(SP); | |
127 | perl_eval_sv(sv, G_SCALAR|G_DISCARD|G_KEEPERR); | |
128 | SvREFCNT_dec(sv); | |
129 | if (SvTRUE(ERRSV)) return US SvPV(ERRSV, len); | |
35d40a98 PH |
130 | |
131 | setlocale(LC_ALL, "C"); /* In case it got changed */ | |
059ec3d9 PH |
132 | return NULL; |
133 | } | |
134 | } | |
135 | ||
136 | void | |
137 | cleanup_perl(void) | |
138 | { | |
139 | if (!interp_perl) | |
140 | return; | |
141 | perl_destruct(interp_perl); | |
142 | perl_free(interp_perl); | |
143 | interp_perl = 0; | |
144 | } | |
145 | ||
146 | uschar * | |
147 | call_perl_cat(uschar *yield, int *sizep, int *ptrp, uschar **errstrp, | |
148 | uschar *name, uschar **arg) | |
149 | { | |
150 | dSP; | |
151 | SV *sv; | |
152 | STRLEN len; | |
153 | uschar *str; | |
154 | int items; | |
155 | ||
156 | if (!interp_perl) | |
157 | { | |
158 | *errstrp = US"the Perl interpreter has not been started"; | |
159 | return 0; | |
160 | } | |
161 | ||
162 | ENTER; | |
163 | SAVETMPS; | |
164 | PUSHMARK(SP); | |
165 | while (*arg != NULL) XPUSHs(newSVpv(CS (*arg++), 0)); | |
166 | PUTBACK; | |
167 | items = perl_call_pv(CS name, G_SCALAR|G_EVAL); | |
168 | SPAGAIN; | |
169 | sv = POPs; | |
170 | PUTBACK; | |
171 | if (SvTRUE(ERRSV)) | |
172 | { | |
173 | *errstrp = US SvPV(ERRSV, len); | |
174 | return NULL; | |
175 | } | |
176 | if (!SvOK(sv)) | |
177 | { | |
178 | *errstrp = 0; | |
179 | return NULL; | |
180 | } | |
181 | str = US SvPV(sv, len); | |
182 | yield = string_cat(yield, sizep, ptrp, str, (int)len); | |
183 | FREETMPS; | |
184 | LEAVE; | |
8e669ac1 | 185 | |
a444213a | 186 | setlocale(LC_ALL, "C"); /* In case it got changed */ |
059ec3d9 PH |
187 | return yield; |
188 | } | |
189 | ||
190 | /* End of perl.c */ |