diff options
Diffstat (limited to 'autologin.c')
| -rw-r--r-- | autologin.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/autologin.c b/autologin.c new file mode 100644 index 0000000..e9a90b7 --- /dev/null +++ b/autologin.c @@ -0,0 +1,175 @@ +#include <stdio.h> +#include <string.h> + +#define AUTOLOGIN_PATH ".mactelnet" +#define AUTOLOGIN_MAXSTR 100 +#define AUTOLOGIN_MAXPROFILES 100 + +struct autologin { + char identifier[AUTOLOGIN_MAXSTR]; + char username[AUTOLOGIN_MAXSTR]; + char password[AUTOLOGIN_MAXSTR]; + char inuse:1; + char hasUsername:1; + char hasPassword:1; +}; + +struct autologin logins[AUTOLOGIN_MAXPROFILES]; + +enum autologin_state { + ALS_NONE, + ALS_IDENTIFIER, + ALS_KEY, + ALS_VALUE, +}; +#define AL_NONE 0 + +int main() { + FILE *fp; + char c; + int i = -1; + char *p; + char key[AUTOLOGIN_MAXSTR]; + char value[AUTOLOGIN_MAXSTR]; + int line_counter=1; + enum autologin_state state = ALS_NONE; + fp = fopen(AUTOLOGIN_PATH, "r"); + while ((c = fgetc(fp)) && !feof(fp)) { + if (c == '#') { + while ((c = fgetc(fp)) != '\n' && !feof(fp)); + } + switch (state) { + case ALS_NONE: + if (c == '[') { + state = ALS_IDENTIFIER; + i++; + p = logins[i].identifier; + } + break; + + case ALS_IDENTIFIER: + if (c == ']') { + //fprintf(stderr, "debug: identifier %s on line %d\n", logins[i].identifier, line_counter); + state = ALS_KEY; + memset(key, 0, AUTOLOGIN_MAXSTR); + memset(value, 0, AUTOLOGIN_MAXSTR); + p = key; + logins[i].inuse = 1; + break; + } + if (c == '\n') { + fprintf(stderr, "Error on line %d in %s: New line in middle of identifier\n", line_counter, AUTOLOGIN_PATH); + state = ALS_NONE; + line_counter++; + break; + } + *p++ = c; + if (p - logins[i].identifier > AUTOLOGIN_MAXSTR) { + fprintf(stderr, "Error on line %d in %s: Identifier string too long.\n", line_counter, AUTOLOGIN_PATH); + while ((c = fgetc(fp)) != '\n' && c != ']' && !feof(fp)); + if (c == '\n') line_counter++; + state = ALS_KEY; + memset(key,0,AUTOLOGIN_MAXSTR); + memset(value, 0, AUTOLOGIN_MAXSTR); + p = key; + break; + } + break; + + case ALS_KEY: + if (p == key && c == '\n') break; + if (c == '=') { + state = ALS_VALUE; + memset(value, 0, AUTOLOGIN_MAXSTR); + p = value; + break; + } + if (c == '[') { + state = ALS_IDENTIFIER; + i++; + p = logins[i].identifier; + break; + } + if (c == ' ') { // ignore whitespace + break; + } + if (c == '\n') { + fprintf(stderr, "Error on line %d in %s: Newline before '=' character\n", line_counter, AUTOLOGIN_PATH); + state = ALS_KEY; + memset(key, 0, AUTOLOGIN_MAXSTR); + memset(value, 0, AUTOLOGIN_MAXSTR); + p = key; + break; + } + *p++ = c; + if (p - key > AUTOLOGIN_MAXSTR) { + fprintf(stderr, "Error on line %d in %s: Key string too long.\n", line_counter, AUTOLOGIN_PATH); + while ((c = fgetc(fp)) != '\n' && c != '=' && !feof(fp)); + if (c == '\n') { + state = ALS_KEY; + memset(key, 0, AUTOLOGIN_MAXSTR); + memset(value, 0, AUTOLOGIN_MAXSTR); + p = key; + } else { + state = ALS_VALUE; + memset(value, 0, AUTOLOGIN_MAXSTR); + p = value; + } + } + break; + + case ALS_VALUE: + if (p == value && c == '\n') break; + if (c == '\n') { + if (strncasecmp(key, "user", AUTOLOGIN_MAXSTR) == 0) { + strncpy(logins[i].username, value, AUTOLOGIN_MAXSTR); + logins[i].hasUsername = 1; + } else if (strncasecmp(key, "password", AUTOLOGIN_MAXSTR) == 0) { + strncpy(logins[i].password, value, AUTOLOGIN_MAXSTR); + logins[i].hasPassword = 1; + } else { + fprintf(stderr, "Warning on line %d of %s: Unknown parameter %s, ignoring.\n", line_counter, AUTOLOGIN_PATH, key); + } + state = ALS_KEY; + memset(key, 0, AUTOLOGIN_MAXSTR); + memset(value, 0, AUTOLOGIN_MAXSTR); + p = key; + break; + } + if (c == ' ') { // ignore whitespace + break; + } + *p++ = c; + if (p - value > AUTOLOGIN_MAXSTR) { + fprintf(stderr, "Error on line %d in %s: Value string too long.\n", line_counter, AUTOLOGIN_PATH); + while ((c = fgetc(fp)) != '\n' && !feof(fp)); + if (c == '\n') { + state = ALS_KEY; + memset(key, 0, AUTOLOGIN_MAXSTR); + memset(value, 0, AUTOLOGIN_MAXSTR); + p = key; + } + } + break; + } + if (c == '\n') { + line_counter++; + } + } + fclose(fp); + + printf("\n\nConfig:\n"); + for (i = 0; i < 100; ++i) { + if (logins[i].inuse) { + printf("Profile: '%s'\n", logins[i].identifier); + if (logins[i].hasUsername) { + printf("\tUsername: '%s'\n", logins[i].username); + } + if (logins[i].hasPassword) { + printf("\tPassword: '%s'\n", logins[i].password); + } + printf("\n"); + } + } + +} |