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// Douglas Thrift |
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// |
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// CCS Computer Science |
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// |
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// Add User |
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|
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#include <sys/resource.h> |
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#include <sys/time.h> |
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#include <sys/types.h> |
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|
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#include "common.h" |
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|
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int main(int argc, char *argv[]) |
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{ |
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int exception; |
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jmp_buf environment; |
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|
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switch (exception = setjmp(environment)) |
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{ |
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case 0: |
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break; |
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case 1: |
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perror(argv[0]); |
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|
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return 1; |
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default: |
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fprintf(stderr, "%s: %s\n", argv[0], (char *)exception); |
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|
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return 1; |
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} |
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|
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#ifdef _Zweihander_ |
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regex_t user_, name_; |
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|
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regcheck(regcomp(&user_, "^-user=([a-z0-9]{1,16})$", REG_EXTENDED), &user_, environment); |
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regcheck(regcomp(&name_, "^-name=([^:]+)$", REG_EXTENDED), &name_, environment); |
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|
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char user[MAXLOGNAME] = "", *name = NULL; |
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|
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for (int index = 1; index != argc; ++index) |
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{ |
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regmatch_t match[2]; |
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|
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if (!regcheck(regexec(&user_, argv[index], 2, match, 0), &user_, environment)) |
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strlcpy(user, argv[index] + match[1].rm_so, match[1].rm_eo - match[1].rm_so + 1); |
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else if (!regcheck(regexec(&name_, argv[index], 2, match, 0), &name_, environment)) |
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name = argv[index] + match[1].rm_so; |
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else |
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{ |
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printf("Usage: %s [-user=user] [-name=name]\n", argv[0]); |
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|
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return 1; |
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} |
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} |
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|
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regfree(&user_); |
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regfree(&name_); |
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authenticate(argv[0], environment); |
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|
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if (!strlen(user)) |
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{ |
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regcheck(regcomp(&user_, "^[a-z0-9]{1,16}$", REG_EXTENDED), &user_, environment); |
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|
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do |
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{ |
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printf("User Name: "); |
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|
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size_t size; |
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char *user_ = fcheck(fgetln(stdin, &size), stdin, environment); |
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|
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strlcpy(user, user_, size < sizeof (user) ? size : sizeof (user)); |
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} |
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while (regcheck(regexec(&user_, user, 0, NULL, 0), &user_, environment)); |
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|
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regfree(&user_); |
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} |
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|
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if (!name) |
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{ |
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regcheck(regcomp(&name_, "^[^:]+$", REG_EXTENDED), &name_, environment); |
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|
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do |
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{ |
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printf("Full Name: "); |
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|
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size_t size; |
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char *name_ = fcheck(fgetln(stdin, &size), stdin, environment); |
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|
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name = name ? realloc(name, size) : malloc(size); |
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|
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strlcpy(name, name_, size); |
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} |
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while (regcheck(regexec(&name_, name, 0, NULL, 0), &name_, environment)); |
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|
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regfree(&name_); |
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} |
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|
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char password[_PASSWORD_LEN]; |
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|
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getpassword(password, environment); |
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check(setuid(geteuid()), environment); |
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|
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char slappasswd[] = "/tmp/slappasswd.XXXXXX"; |
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|
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putpassword(password, slappasswd, environment); |
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|
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int pipe_[2]; |
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|
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check(pipe(pipe_), environment); |
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|
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pid_t bash; |
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|
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if (!(bash = check(fork(), environment))) |
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{ |
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check(dup2(pipe_[0], 0), environment); |
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check(close(pipe_[1]), environment); |
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check(setenv("USER", user, 1), environment); |
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check(setenv("NAME", name, 1), environment); |
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check(setenv("FILE", slappasswd, 1), environment); |
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check(execl("/ccs/bin/adduser.sh", argv[0], NULL), environment); |
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} |
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|
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check(close(pipe_[0]), environment); |
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|
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FILE *smbpasswd = fdopen(pipe_[1], "w"); |
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|
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if (fprintf(smbpasswd, "%s\n%s\n", password, password) < 0) |
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longjmp(environment, 1); |
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|
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if (fclose(smbpasswd)) |
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longjmp(environment, 1); |
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|
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int status; |
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|
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check(waitpid(bash, &status, 0), environment); |
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check(unlink(slappasswd), environment); |
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|
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if (WEXITSTATUS(status)) |
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return 1; |
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|
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struct passwd *entry = getpwnam(user); |
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|
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if (!entry) |
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longjmp(environment, 1); |
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|
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check(mkdir(entry->pw_dir, 0755), environment); |
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check(chown(entry->pw_dir, entry->pw_uid, entry->pw_gid), environment); |
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#else |
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longjmp(environment, (int)"Log in to zweihander.ccs.ucsb.edu to add users"); |
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#endif |
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|
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return 0; |
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} |
