Commit | Line | Data |
---|---|---|
5db16f6a EF |
1 | /* |
2 | * Cygwin extras | |
3 | */ | |
4 | ||
5 | #include "EXTERN.h" | |
6 | #include "perl.h" | |
7 | #undef USE_DYNAMIC_LOADING | |
8 | #include "XSUB.h" | |
9 | ||
6b49d266 | 10 | #include <unistd.h> |
b4bcd662 | 11 | #include <process.h> |
5db16f6a | 12 | |
b4bcd662 GS |
13 | /* |
14 | * pp_system() implemented via spawn() | |
15 | * - more efficient and useful when embedding Perl in non-Cygwin apps | |
16 | * - code mostly borrowed from djgpp.c | |
17 | */ | |
18 | static int | |
19 | do_spawnvp (const char *path, const char * const *argv) | |
20 | { | |
acfe0abc | 21 | dTHX; |
b4bcd662 GS |
22 | Sigsave_t ihand,qhand; |
23 | int childpid, result, status; | |
24 | ||
25 | rsignal_save(SIGINT, SIG_IGN, &ihand); | |
26 | rsignal_save(SIGQUIT, SIG_IGN, &qhand); | |
27 | childpid = spawnvp(_P_NOWAIT,path,argv); | |
28 | if (childpid < 0) { | |
29 | status = -1; | |
411caa50 | 30 | if(ckWARN(WARN_EXEC)) |
b4bcd662 GS |
31 | Perl_warner(aTHX_ WARN_EXEC,"Can't spawn \"%s\": %s", |
32 | path,Strerror (errno)); | |
b4bcd662 GS |
33 | } else { |
34 | do { | |
35 | result = wait4pid(childpid, &status, 0); | |
36 | } while (result == -1 && errno == EINTR); | |
37 | if(result < 0) | |
38 | status = -1; | |
39 | } | |
40 | (void)rsignal_restore(SIGINT, &ihand); | |
41 | (void)rsignal_restore(SIGQUIT, &qhand); | |
42 | return status; | |
43 | } | |
44 | ||
45 | int | |
46 | do_aspawn (SV *really, void **mark, void **sp) | |
47 | { | |
acfe0abc | 48 | dTHX; |
b4bcd662 GS |
49 | int rc; |
50 | char **a,*tmps,**argv; | |
51 | STRLEN n_a; | |
52 | ||
53 | if (sp<=mark) | |
54 | return -1; | |
55 | a=argv=(char**) alloca ((sp-mark+3)*sizeof (char*)); | |
56 | ||
57 | while (++mark <= sp) | |
58 | if (*mark) | |
59 | *a++ = SvPVx(*mark, n_a); | |
60 | else | |
61 | *a++ = ""; | |
62 | *a = Nullch; | |
63 | ||
64 | if (argv[0][0] != '/' && argv[0][0] != '\\' | |
65 | && !(argv[0][0] && argv[0][1] == ':' | |
66 | && (argv[0][2] == '/' || argv[0][2] != '\\')) | |
67 | ) /* will swawnvp use PATH? */ | |
68 | TAINT_ENV(); /* testing IFS here is overkill, probably */ | |
69 | ||
70 | if (really && *(tmps = SvPV(really, n_a))) | |
71 | rc=do_spawnvp (tmps,(const char * const *)argv); | |
72 | else | |
73 | rc=do_spawnvp (argv[0],(const char *const *)argv); | |
74 | ||
75 | return rc; | |
76 | } | |
77 | ||
78 | int | |
79 | do_spawn (char *cmd) | |
80 | { | |
acfe0abc | 81 | dTHX; |
b4bcd662 GS |
82 | char **a,*s,*metachars = "$&*(){}[]'\";\\?>|<~`\n"; |
83 | const char *command[4]; | |
84 | ||
85 | while (*cmd && isSPACE(*cmd)) | |
86 | cmd++; | |
87 | ||
88 | if (strnEQ (cmd,"/bin/sh",7) && isSPACE (cmd[7])) | |
89 | cmd+=5; | |
90 | ||
91 | /* save an extra exec if possible */ | |
92 | /* see if there are shell metacharacters in it */ | |
93 | if (strstr (cmd,"...")) | |
94 | goto doshell; | |
95 | if (*cmd=='.' && isSPACE (cmd[1])) | |
96 | goto doshell; | |
97 | if (strnEQ (cmd,"exec",4) && isSPACE (cmd[4])) | |
98 | goto doshell; | |
99 | for (s=cmd; *s && isALPHA (*s); s++) ; /* catch VAR=val gizmo */ | |
100 | if (*s=='=') | |
101 | goto doshell; | |
102 | ||
103 | for (s=cmd; *s; s++) | |
104 | if (strchr (metachars,*s)) | |
105 | { | |
106 | if (*s=='\n' && s[1]=='\0') | |
107 | { | |
108 | *s='\0'; | |
109 | break; | |
110 | } | |
111 | doshell: | |
112 | command[0] = "sh"; | |
113 | command[1] = "-c"; | |
114 | command[2] = cmd; | |
115 | command[3] = NULL; | |
116 | ||
117 | return do_spawnvp("sh",command); | |
118 | } | |
119 | ||
120 | New (1303,PL_Argv,(s-cmd)/2+2,char*); | |
121 | PL_Cmd=savepvn (cmd,s-cmd); | |
122 | a=PL_Argv; | |
123 | for (s=PL_Cmd; *s;) { | |
124 | while (*s && isSPACE (*s)) s++; | |
125 | if (*s) | |
126 | *(a++)=s; | |
127 | while (*s && !isSPACE (*s)) s++; | |
128 | if (*s) | |
129 | *s++='\0'; | |
130 | } | |
131 | *a=Nullch; | |
132 | if (!PL_Argv[0]) | |
133 | return -1; | |
134 | ||
135 | return do_spawnvp(PL_Argv[0],(const char * const *)PL_Argv); | |
136 | } | |
5db16f6a EF |
137 | |
138 | /* see also Cwd.pm */ | |
139 | static | |
140 | XS(Cygwin_cwd) | |
141 | { | |
142 | dXSARGS; | |
143 | char *cwd; | |
144 | ||
145 | if(items != 0) | |
146 | Perl_croak(aTHX_ "Usage: Cwd::cwd()"); | |
47dafe4d | 147 | if((cwd = getcwd(NULL, -1))) { |
5db16f6a EF |
148 | ST(0) = sv_2mortal(newSVpv(cwd, 0)); |
149 | safesysfree(cwd); | |
6be3b590 JH |
150 | #ifndef INCOMPLETE_TAINTS |
151 | SvTAINTED_on(ST(0)); | |
152 | #endif | |
5db16f6a EF |
153 | XSRETURN(1); |
154 | } | |
155 | XSRETURN_UNDEF; | |
156 | } | |
157 | ||
158 | void | |
159 | init_os_extras(void) | |
160 | { | |
161 | char *file = __FILE__; | |
162 | dTHX; | |
163 | ||
164 | newXS("Cwd::cwd", Cygwin_cwd, file); | |
165 | } |