Revision cc7646f9
Major changes to mainbox code.
-Added local cache for RFID -> tool permissions
-Queries new page /crm/roboauth/%08x, which gives bitmask of all tool
permissions instead of just one
-Added pid file at /var/run/tooltron.pid
-Now must be run as "tooltron run" and also has "tooltron refresh" and
"tooltron clear" which send signals to the pid in the pid file
-Other things I'm forgetting
| mainbox/util.c | ||
|---|---|---|
| 2 | 2 |
#include "log.h" |
| 3 | 3 |
#include <stdlib.h> |
| 4 | 4 |
#include <stdio.h> |
| 5 |
#include <errno.h> |
|
| 5 | 6 |
#include <unistd.h> |
| 6 | 7 |
#include <sys/types.h> |
| 7 | 8 |
#include <sys/stat.h> |
| 8 | 9 |
#include <fcntl.h> |
| 9 | 10 |
|
| 11 |
/* |
|
| 12 |
* read_file |
|
| 13 |
* |
|
| 14 |
* Reads in an entire file. Returns NULL on error, or a malloc'd pointer to a |
|
| 15 |
* string which should later be freed. |
|
| 16 |
*/ |
|
| 10 | 17 |
char *read_file(const char *filename) {
|
| 11 | 18 |
int fd, len, size, nread; |
| 12 | 19 |
char *str; |
| ... | ... | |
| 46 | 53 |
} |
| 47 | 54 |
} |
| 48 | 55 |
} |
| 56 |
|
|
| 57 |
/* |
|
| 58 |
* create_pid_file |
|
| 59 |
* |
|
| 60 |
* Creates /var/run/tooltron.pid containing the PID of the current process. |
|
| 61 |
* Returns 0 if successful, or nonzero if there is an error or it already |
|
| 62 |
* exists. |
|
| 63 |
*/ |
|
| 64 |
int create_pid_file() {
|
|
| 65 |
int fd; |
|
| 66 |
FILE *file; |
|
| 67 |
|
|
| 68 |
fd = open("/var/run/tooltron.pid", O_CREAT | O_EXCL | O_WRONLY, 0644);
|
|
| 69 |
if (fd < 0) {
|
|
| 70 |
if (errno == EEXIST) |
|
| 71 |
fprintf(stderr, "ERROR: tooltron is already running, or the pidfile " |
|
| 72 |
"/var/run/tooltron.pid is stale"); |
|
| 73 |
else |
|
| 74 |
log_perror("open");
|
|
| 75 |
return 1; |
|
| 76 |
} |
|
| 77 |
|
|
| 78 |
file = fdopen(fd, "w"); |
|
| 79 |
if (!file) {
|
|
| 80 |
log_perror("fdopen");
|
|
| 81 |
return 1; |
|
| 82 |
} |
|
| 83 |
|
|
| 84 |
fprintf(file, "%d", getpid()); |
|
| 85 |
|
|
| 86 |
fclose(file); |
|
| 87 |
return 0; |
|
| 88 |
} |
|
| 89 |
|
|
| 90 |
/* |
|
| 91 |
* remove_pid_file |
|
| 92 |
* |
|
| 93 |
* Removes /var/run/tooltron.pid. |
|
| 94 |
*/ |
|
| 95 |
void remove_pid_file() {
|
|
| 96 |
if (unlink("/var/run/tooltron.pid"))
|
|
| 97 |
log_perror("unlink");
|
|
| 98 |
} |
|
| 99 |
|
|
| 100 |
/* |
|
| 101 |
* read_pid_file |
|
| 102 |
* |
|
| 103 |
* Returns the integer found in /var/run/tooltron.pid, or 0 if there was an |
|
| 104 |
* error. |
|
| 105 |
*/ |
|
| 106 |
pid_t read_pid_file() {
|
|
| 107 |
FILE *file; |
|
| 108 |
int pid; |
|
| 109 |
|
|
| 110 |
file = fopen("/var/run/tooltron.pid", "r");
|
|
| 111 |
if (!file) {
|
|
| 112 |
if (errno == ENOENT) |
|
| 113 |
fprintf(stderr, "ERROR: tooltron does not appear to be running\n"); |
|
| 114 |
else |
|
| 115 |
perror("fopen");
|
|
| 116 |
return 0; |
|
| 117 |
} |
|
| 118 |
|
|
| 119 |
if (fscanf(file, "%d", &pid) != 1) {
|
|
| 120 |
perror("fscanf");
|
|
| 121 |
fclose(file); |
|
| 122 |
return 0; |
|
| 123 |
} |
|
| 124 |
|
|
| 125 |
fclose(file); |
|
| 126 |
return pid; |
|
| 127 |
} |
|
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