mirror of https://github.com/dirtbags/moth.git
50 lines
971 B
C
50 lines
971 B
C
#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <values.h>
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#ifndef CTF_BASE
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#define CTF_BASE "/var/lib/ctf"
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#endif
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ssize_t
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read_token_fd(int fd,
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uint8_t const *key, size_t keylen,
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char *buf, size_t buflen)
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{
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ssize_t ret;
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ret = read(fd, buf, buflen);
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if (-1 != ret) {
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arc4_crypt_buffer(key, keylen, (uint8_t *)buf, (size_t)ret);
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}
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return ret;
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}
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ssize_t
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read_token(char const *name,
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uint8_t const *key, size_t keylen,
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char *buf, size_t buflen)
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{
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char path[PATH_MAX];
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int pathlen;
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int fd;
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ssize_t ret;
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pathlen = snprintf(path, sizeof(path) - 1,
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CTF_BASE "/tokens/%s", name);
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path[pathlen] = '\0';
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fd = open(path, O_RDONLY);
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if (-1 == fd) return -1;
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ret = read_token_fd(fd, key, keylen, buf, buflen);
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close(fd);
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return ret;
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}
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