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Diffstat (limited to 'tools/mini_epn.c')
| -rw-r--r-- | tools/mini_epn.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/tools/mini_epn.c b/tools/mini_epn.c new file mode 100644 index 00000000..cd675389 --- /dev/null +++ b/tools/mini_epn.c | |||
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| 1 | /* | ||
| 2 | * | ||
| 3 | * MINI_EPN.C - Mini Embedded Perl Nagios | ||
| 4 | * Contributed by Stanley Hopcroft | ||
| 5 | * Modified by Douglas Warner | ||
| 6 | * Last Modified: 05/02/2002 | ||
| 7 | * | ||
| 8 | * $Id$ | ||
| 9 | * | ||
| 10 | * This is a sample mini embedded Perl interpreter (hacked out checks.c and | ||
| 11 | * perlembed) for use in testing Perl plugins. | ||
| 12 | * | ||
| 13 | * It can be compiled with the following command (see 'man perlembed' for | ||
| 14 | * more info): | ||
| 15 | * | ||
| 16 | * gcc -omini_epn mini_epn.c `perl -MExtUtils::Embed -e ccopts -e ldopts` | ||
| 17 | * | ||
| 18 | * NOTES: The compiled binary needs to be in the same directory as the p1.pl | ||
| 19 | * file supplied with Nagios (or vice versa) | ||
| 20 | * When using mini_epn to test perl scripts, you must place positional | ||
| 21 | * arguments immediately after the file/script and before any arguments | ||
| 22 | * processed by Getopt | ||
| 23 | * | ||
| 24 | */ | ||
| 25 | |||
| 26 | |||
| 27 | #include <EXTERN.h> | ||
| 28 | #include <perl.h> | ||
| 29 | #include <fcntl.h> | ||
| 30 | #include <string.h> | ||
| 31 | |||
| 32 | /* include PERL xs_init code for module and C library support */ | ||
| 33 | |||
| 34 | #if defined(__cplusplus) | ||
| 35 | #define is_cplusplus | ||
| 36 | #endif | ||
| 37 | |||
| 38 | #ifdef is_cplusplus | ||
| 39 | extern "C" { | ||
| 40 | #endif | ||
| 41 | |||
| 42 | #define NO_XSLOCKS | ||
| 43 | #include <XSUB.h> | ||
| 44 | |||
| 45 | #ifdef is_cplusplus | ||
| 46 | } | ||
| 47 | # ifndef EXTERN_C | ||
| 48 | # define EXTERN_C extern "C" | ||
| 49 | # endif | ||
| 50 | #else | ||
| 51 | # ifndef EXTERN_C | ||
| 52 | # define EXTERN_C extern | ||
| 53 | # endif | ||
| 54 | #endif | ||
| 55 | |||
| 56 | |||
| 57 | EXTERN_C void xs_init _((void)); | ||
| 58 | |||
| 59 | EXTERN_C void boot_DynaLoader _((CV* cv)); | ||
| 60 | |||
| 61 | EXTERN_C void xs_init(void) | ||
| 62 | { | ||
| 63 | char *file = __FILE__; | ||
| 64 | dXSUB_SYS; | ||
| 65 | |||
| 66 | /* DynaLoader is a special case */ | ||
| 67 | newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file); | ||
| 68 | } | ||
| 69 | |||
| 70 | |||
| 71 | static PerlInterpreter *perl = NULL; | ||
| 72 | |||
| 73 | |||
| 74 | int main(int argc, char **argv, char **env) | ||
| 75 | { | ||
| 76 | char *embedding[] = { "", "p1.pl" }; | ||
| 77 | char plugin_output[1024]; | ||
| 78 | char buffer[512]; | ||
| 79 | char tmpfname[32]; | ||
| 80 | char fname[32]; | ||
| 81 | char *args[] = {"","0", "", "", NULL }; | ||
| 82 | FILE *fp; | ||
| 83 | |||
| 84 | const int command_line_size = 160; | ||
| 85 | char command_line[command_line_size]; | ||
| 86 | char *ap ; | ||
| 87 | int exitstatus; | ||
| 88 | int pclose_result; | ||
| 89 | #ifdef THREADEDPERL | ||
| 90 | dTHX; | ||
| 91 | #endif | ||
| 92 | dSP; | ||
| 93 | |||
| 94 | if ((perl=perl_alloc())==NULL) { | ||
| 95 | snprintf(buffer,sizeof(buffer),"Error: Could not allocate memory for embedded Perl interpreter!\n"); | ||
| 96 | buffer[sizeof(buffer)-1]='\x0'; | ||
| 97 | printf("%s\n", buffer); | ||
| 98 | exit(1); | ||
| 99 | } | ||
| 100 | perl_construct(perl); | ||
| 101 | exitstatus=perl_parse(perl,xs_init,2,embedding,NULL); | ||
| 102 | if (!exitstatus) { | ||
| 103 | |||
| 104 | exitstatus=perl_run(perl); | ||
| 105 | |||
| 106 | while(printf("Enter file name: ") && fgets(command_line, command_line_size, stdin)) { | ||
| 107 | |||
| 108 | /* call the subroutine, passing it the filename as an argument */ | ||
| 109 | |||
| 110 | command_line[strlen(command_line) -1] = '\0'; | ||
| 111 | |||
| 112 | strncpy(fname,command_line,strcspn(command_line," ")); | ||
| 113 | fname[strcspn(command_line," ")] = '\x0'; | ||
| 114 | args[0] = fname ; | ||
| 115 | args[3] = command_line + strlen(fname) + 1 ; | ||
| 116 | |||
| 117 | /* generate a temporary filename to which stdout can be redirected. */ | ||
| 118 | sprintf(tmpfname,"/tmp/embedded%d",getpid()); | ||
| 119 | args[2] = tmpfname; | ||
| 120 | |||
| 121 | /* call our perl interpreter to compile and optionally cache the command */ | ||
| 122 | perl_call_argv("Embed::Persistent::eval_file", G_DISCARD | G_EVAL, args); | ||
| 123 | |||
| 124 | perl_call_argv("Embed::Persistent::run_package", G_DISCARD | G_EVAL, args); | ||
| 125 | |||
| 126 | /* check return status */ | ||
| 127 | if(SvTRUE(ERRSV)){ | ||
| 128 | pclose_result=-2; | ||
| 129 | printf("embedded perl ran %s with error %s\n",fname,SvPV(ERRSV,PL_na)); | ||
| 130 | } | ||
| 131 | |||
| 132 | /* read back stdout from script */ | ||
| 133 | fp=fopen(tmpfname, "r"); | ||
| 134 | |||
| 135 | /* default return string in case nothing was returned */ | ||
| 136 | strcpy(plugin_output,"(No output!)"); | ||
| 137 | |||
| 138 | fgets(plugin_output,sizeof(plugin_output)-1,fp); | ||
| 139 | plugin_output[sizeof(plugin_output)-1]='\x0'; | ||
| 140 | fclose(fp); | ||
| 141 | unlink(tmpfname); | ||
| 142 | printf("embedded perl plugin output was %d,%s\n",pclose_result, plugin_output); | ||
| 143 | |||
| 144 | } | ||
| 145 | |||
| 146 | } | ||
| 147 | |||
| 148 | |||
| 149 | PL_perl_destruct_level = 0; | ||
| 150 | perl_destruct(perl); | ||
| 151 | perl_free(perl); | ||
| 152 | exit(exitstatus); | ||
| 153 | } | ||
