diff options
Diffstat (limited to 'implementation.c')
| -rw-r--r-- | implementation.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/implementation.c b/implementation.c new file mode 100644 index 0000000..0ef17c1 --- /dev/null +++ b/implementation.c @@ -0,0 +1,217 @@ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <termios.h> +#include <string.h> +#include <time.h> +#include <sys/wait.h> +#include <errno.h> + +#include "handerror.h" +#include "easydir.h" + +// == global var == +extern char *gPath_rootdir; + +char* getPassword(char *path, char *password, int maxlen) +{ + FILE *filePass; + filePass = fopen(path, "r"); + if(filePass == NULL) { + if(errno == ENOENT) { // file doesn't exist + printError("lpass: No such file exists\n"); + } + callError(110); + } + + char sign[maxlen]; + if(!fgets(sign, sizeof(sign), filePass)) { + callError(111); + } + + strcpy(password, sign); + fclose(filePass); + return password; +} + +void nonvisibleEnter(int status) +{ + struct termios term_settings; + tcgetattr(0, &term_settings); // get current settings + if(status == 1) { + term_settings.c_lflag &= ~ECHO; // flag reset + } + else { + term_settings.c_lflag |= ECHO; + } + tcsetattr(0, TCSANOW, &term_settings); +} + +void insertPass(char *add_path, char *password) +{ + /* gPath_rootdir = /home/[username]/.lock-password/Password-Storage/ + add_path = banks/france/[number] + main_path = banks/france + file_path = [number] */ + + char *main_path = malloc( sizeof(char) * (strlen(add_path)+1) ); + char *file_path = malloc( sizeof(char) * (strlen(add_path)+1) ); + + if(splitPath(add_path, main_path, file_path) == NULL) { + printError("lpass: The path you specified is incorrect\n"); + } + + int pass_buf = strlen(gPath_rootdir) + strlen(add_path) + 1; + char *final_path = (char*) malloc(sizeof(char) * pass_buf); + + strcpy(final_path, gPath_rootdir); + strcat(final_path, main_path); + + if(strcmp(main_path, "") != 0) { + int pid = fork(); + if(pid == -1) callError(103); + if(pid == 0) { /* new process */ + execlp("mkdir", "mkdir", "-p", main_path, NULL); + perror("mkdir"); + exit(4); + } + wait(&pid); + } + + if(chdir(final_path) != 0) { + callError(107); + } + + // create file, copy password there + FILE *filePass; + filePass = fopen(file_path, "w"); + if(filePass == NULL) { + callError(108); + } + fputs(password, filePass); + fclose(filePass); + + free(main_path); + free(file_path); +} + +char *typePass(char *text, char *dest, int minlen, int maxlen) +{ + printf("%s", text); + if(fgets(dest, sizeof(char)*maxlen, stdin) == NULL) { + nonvisibleEnter(0); + printError("lpass: Unexpected end of file\n"); + } + + int len = strlen(dest); + if(len < minlen || len > maxlen) { + nonvisibleEnter(0); + printError("lpass: incorrect password\n"); + } + + if(dest[len-1] == '\n') { + dest[len-1] = '\0'; + } + + #if defined(DEBUG) + printf("%s", dest); + #endif + + printf("\n"); // for new line + return dest; +} + +int userEnterPassword(int minlen, int maxlen, char *path_insert) +{ + char *pass_one = (char *) malloc(sizeof(char) * maxlen); + char *pass_two = (char *) malloc(sizeof(char) * maxlen); + + nonvisibleEnter(1); // change terminal work + typePass("Please type your new password: ", pass_one, minlen, maxlen); + typePass("Please type your new password again: ", pass_two, minlen, maxlen); + nonvisibleEnter(0); + + int rvalue = 0; + if(strcmp(pass_one, pass_two) == 0) { + insertPass(path_insert, pass_one); + rvalue = 1; + } + + free(pass_one); + free(pass_two); + return rvalue; +} + +char *generatePassword(char *dest, int amount, int max_len) +{ + char allowed_symbols[] = { + 'A','E','I','J','O','U','B','C','D','F','G','H', + 'K','L','M','N','P','Q','R','S','T','V','W','X', + 'Y','Z','a','e','i','j','o','u','b','c','d','f', + 'g','h','k','l','m','n','p','q','r','s','t','v', + 'w','x','y','z','1','2','3','4','5','6','7','8', + '9','0','!','#','$',';','%','^',':','&','?','*', + '(',')','-','_','+','=','<', '>' + }; + int max = sizeof(allowed_symbols); + srand(time(NULL)); + + char password[max_len]; + for(int i=0; i < amount; i++) + { + char c = allowed_symbols[rand() % max]; + + password[i] = c; + password[i+1] = '\0'; + } + + strcpy(dest, password); + return dest; +} + +unsigned long hash(char *str) +{ + unsigned long hash = 5381; + char c; + + while( (c = *str++) ) + hash = ((hash << 5) + hash) + c; /* hash * 33 + c */ + + return hash; +} + +static void clearStdinBuff() +{ + char garbage; + + while( (garbage = fgetc(stdin)) != '\n' && garbage != EOF ) + ; +} + + +int getAnswer(char *text) +{ + char answer; + printf("%s\n", text); + while( (answer = fgetc(stdin)) ) + { + clearStdinBuff(); + switch(answer) + { + case 'Y': + case 'y': + return 1; + case 'N': + case 'n': + return 0; + case EOF: + printError("lpass: Unexpected end of file\n"); + default: { + printf("%s\n", text); + break; + } + } + } + + return -1; +} |