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#define _POSIX_C_SOURCE 200809L
#include "jwt.h"
#include <cjson/cJSON.h>
#include <dynstr.h>
#include <sodium.h>
#include <sqlite3.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
static int tokenkey(void *const args, const int n, char **const values,
char **const keys)
{
char *key;
if (n != 1)
{
fprintf(stderr, "%s: expected 1 key only, got %d\n", __func__, n);
return -1;
}
else if (!(key = strdup(*values)))
{
fprintf(stderr, "%s: strdup(3): %s\n", __func__, strerror(errno));
return -1;
}
*(char **)args = key;
return 0;
}
static int process(sqlite3 *const db, const char *const user)
{
static const char query[] = "SELECT value FROM globals "
"WHERE key = 'tokenkey';";
int ret = -1, error;
cJSON *j = NULL;
char *s = NULL, *key = NULL, *jwt = NULL;
unsigned char dkey[32];
time_t t;
if ((error = sqlite3_exec(db, query, tokenkey, &key, &s)) != SQLITE_OK)
{
fprintf(stderr, "%s: sqlite3_exec \"%s\": %s (%s)\n", __func__, query,
sqlite3_errstr(error), s);
goto end;
}
else if (strlen(key) != sizeof dkey * 2)
{
fprintf(stderr, "%s: unexpected key length: %zu\n", __func__,
strlen(key));
goto end;
}
else if (sodium_hex2bin(dkey, sizeof dkey, key, strlen(key), NULL, NULL,
NULL))
{
fprintf(stderr, "%s: sodium_hex2bin failed\n", __func__);
goto end;
}
else if (!(j = cJSON_CreateObject()))
{
fprintf(stderr, "%s: cJSON_CreateObject failed\n", __func__);
goto end;
}
else if (!cJSON_AddStringToObject(j, "name", user))
{
fprintf(stderr, "%s: cJSON_AddStringToObject failed\n", __func__);
goto end;
}
else if ((t = time(NULL)) == (time_t)-1)
{
fprintf(stderr, "%s: time(2): %s\n", __func__, strerror(errno));
goto end;
}
else if (!cJSON_AddNumberToObject(j, "exp", t + 24 * 60 * 60))
{
fprintf(stderr, "%s: cJSON_AddNumberToObject failed\n", __func__);
goto end;
}
else if (!(jwt = jwt_encode(j, dkey, sizeof dkey)))
{
fprintf(stderr, "%s: jwt_encode failed\n", __func__);
goto end;
}
printf("%s %s\n", user, jwt);
ret = 0;
end:
free(jwt);
free(key);
sqlite3_free(s);
cJSON_Delete(j);
return ret;
}
static sqlite3 *open_db(const char *const dir)
{
sqlite3 *ret = NULL, *db = NULL;
struct dynstr d;
int error;
dynstr_init(&d);
if (dynstr_append(&d, "%s/nanobbs.db", dir))
{
fprintf(stderr, "%s: dynstr_append failed\n", __func__);
goto end;
}
else if ((error = sqlite3_open(d.str, &db)) != SQLITE_OK)
{
fprintf(stderr, "%s: sqlite3_open %s: %s\n", __func__, d.str,
sqlite3_errstr(error));
goto end;
}
ret = db;
end:
dynstr_free(&d);
return ret;
}
int main(int argc, char *argv[])
{
int ret = EXIT_FAILURE, error;
sqlite3 *db = NULL;
if (argc < 3)
{
fprintf(stderr, "%s <dir> <user> [...]\n", *argv);
goto end;
}
else if (!(db = open_db(argv[1])))
goto end;
for (int i = 2; i < argc; i++)
if (process(db, argv[i]))
goto end;
ret = EXIT_SUCCESS;
end:
if ((error = sqlite3_close(db)) != SQLITE_OK)
{
fprintf(stderr, "%s: sqlite3_close: %s\n", __func__,
sqlite3_errstr(error));
ret = EXIT_FAILURE;
}
return ret;
}
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