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#include <string.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <unistd.h> | |
void | |
strvec_slurp (char **envstrvec, size_t size, size_t nitems, | |
const char *filename) | |
{ | |
FILE *fp = fopen (filename, "r"); | |
int i; | |
for (i = 0; envstrvec[i] && i < nitems; ++i) | |
if (!fgets (envstrvec[i], size, fp)) | |
break; | |
fclose (fp); | |
} | |
char * | |
strvec_get (char **envstrvec, const char *name) | |
{ | |
int i; | |
int len; | |
char *comtq; | |
char *nameq; | |
char *value; | |
for (i = 0; envstrvec[i]; i++) | |
{ | |
comtq = strchr (envstrvec[i], '#'); | |
if (comtq && comtq == envstrvec[i]) | |
continue; | |
value = strchr (envstrvec[i], '='); | |
if (!value) | |
continue; | |
nameq = strchr (envstrvec[i], ' '); | |
if (!nameq || nameq > value) | |
nameq = envstrvec[i]; | |
else | |
nameq++; | |
if (!strncmp (nameq, name, value - nameq)) | |
{ | |
value++; | |
len = strlen (value); | |
if (value[len - 1] == '\n') | |
{ | |
value[len - 1] = '\0'; | |
len--; | |
} | |
if (value[len - 1] == '"' && value[0] == '"') | |
{ | |
value[len - 1] = '\0'; | |
value++; | |
len -= 2; | |
} | |
return value; | |
} | |
} | |
return NULL; | |
} | |
int | |
main (int argc, char *argv[]) | |
{ | |
char envstrbuf[255][255]; | |
char *envstrvec[255]; | |
for (int i = 0; i < 255; ++i) | |
envstrvec[i] = (char *) &envstrbuf[i]; | |
strvec_slurp (envstrvec, 255, 255, argv[1]); | |
printf ("MOTD is %s\n", strvec_get (envstrvec, "MOTD")); | |
return 0; | |
} |
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