/* * Read a word from the temp file and verify that the result matches our * expectations: whether a word was read at all, how many lines were read * (in case of quoted or escaped newlines), whether we reached the end of * the file and whether we reached the end of the line. */ static int orw_expect(struct t_file *tf, const char *expected, int lines, int eof, int eol) { int ch, lineno = 0; char *got; size_t len; got = openpam_readword(tf->file, &lineno, &len); if (t_ferror(tf)) err(1, "%s(): %s", __func__, tf->name); if (expected != NULL && got == NULL) { t_verbose("expected <<%s>>, got nothing\n", expected); return (0); } if (expected == NULL && got != NULL) { t_verbose("expected nothing, got <<%s>>\n", got); return (0); } if (expected != NULL && got != NULL && strcmp(expected, got) != 0) { t_verbose("expected <<%s>>, got <<%s>>\n", expected, got); return (0); } if (lineno != lines) { t_verbose("expected to advance %d lines, advanced %d lines\n", lines, lineno); return (0); } if (eof && !t_feof(tf)) { t_verbose("expected EOF, but didn't get it\n"); return (0); } if (!eof && t_feof(tf)) { t_verbose("didn't expect EOF, but got it anyway\n"); return (0); } ch = fgetc(tf->file); if (t_ferror(tf)) err(1, "%s(): %s", __func__, tf->name); if (eol && ch != '\n') { t_verbose("expected EOL, but didn't get it\n"); return (0); } if (!eol && ch == '\n') { t_verbose("didn't expect EOL, but got it anyway\n"); return (0); } if (ch != EOF) ungetc(ch, tf->file); return (1); }
/* * Read a line from the temp file and verify that the result matches our * expectations: whether a line was read at all, how many and which words * it contained, how many lines were read (in case of quoted or escaped * newlines) and whether we reached the end of the file. */ static int orlv_expect(const char **expectedv, int lines, int eof) { int expectedc, gotc, i, lineno = 0; char **gotv; expectedc = 0; if (expectedv != NULL) while (expectedv[expectedc] != NULL) ++expectedc; gotv = openpam_readlinev(f, &lineno, &gotc); if (ferror(f)) err(1, "%s(): %s", __func__, filename); if (expectedv != NULL && gotv == NULL) { t_verbose("expected %d words, got nothing\n", expectedc); return (0); } if (expectedv == NULL && gotv != NULL) { t_verbose("expected nothing, got %d words\n", gotc); FREEV(gotc, gotv); return (0); } if (expectedv != NULL && gotv != NULL) { if (expectedc != gotc) { t_verbose("expected %d words, got %d\n", expectedc, gotc); FREEV(gotc, gotv); return (0); } for (i = 0; i < gotc; ++i) { if (strcmp(expectedv[i], gotv[i]) != 0) { t_verbose("word %d: expected <<%s>>, " "got <<%s>>\n", i, expectedv[i], gotv[i]); FREEV(gotc, gotv); return (0); } } FREEV(gotc, gotv); } if (lineno != lines) { t_verbose("expected to advance %d lines, advanced %d lines\n", lines, lineno); return (0); } if (eof && !feof(f)) { t_verbose("expected EOF, but didn't get it\n"); return (0); } if (!eof && feof(f)) { t_verbose("didn't expect EOF, but got it anyway\n"); return (0); } return (1); }
/* * Conversation function * * The appdata argument points to a struct t_pam_conv_script which * contains both the expected messages and the desired responses. If * script.responses is NULL, t_pam_conv() will return PAM_CONV_ERR. If an * error occurs (incorrect number of messages, messages don't match script * etc.), script.comment will be set to point to a malloc()ed string * describing the error. Otherwise, t_pam_conv() will return to its * caller a malloc()ed copy of script.responses. */ int t_pam_conv(int nm, const struct pam_message **msgs, struct pam_response **respsp, void *ad) { struct t_pam_conv_script *s = ad; struct pam_response *resps; int i; /* check message count */ if (nm != s->nmsg) { asprintf(&s->comment, "expected %d messages, got %d", s->nmsg, nm); return (PAM_CONV_ERR); } if (nm <= 0 || nm > PAM_MAX_NUM_MSG) { /* since the previous test passed, this is intentional! */ s->comment = NULL; return (PAM_CONV_ERR); } /* check each message and provide the sed answer */ if ((resps = calloc(nm, sizeof *resps)) == NULL) goto enomem; for (i = 0; i < nm; ++i) { if (msgs[i]->msg_style != s->msgs[i].msg_style) { asprintf(&s->comment, "message %d expected style %d got %d", i, s->msgs[i].msg_style, msgs[i]->msg_style); goto fail; } if (strcmp(msgs[i]->msg, s->msgs[i].msg) != 0) { asprintf(&s->comment, "message %d expected \"%s\" got \"%s\"", i, s->msgs[i].msg, msgs[i]->msg); goto fail; } switch (msgs[i]->msg_style) { case PAM_PROMPT_ECHO_OFF: t_verbose("[PAM_PROMPT_ECHO_OFF] %s\n", msgs[i]->msg); break; case PAM_PROMPT_ECHO_ON: t_verbose("[PAM_PROMPT_ECHO_ON] %s\n", msgs[i]->msg); break; case PAM_ERROR_MSG: t_verbose("[PAM_ERROR_MSG] %s\n", msgs[i]->msg); break; case PAM_TEXT_INFO: t_verbose("[PAM_TEXT_INFO] %s\n", msgs[i]->msg); break; default: asprintf(&s->comment, "invalid message style %d", msgs[i]->msg_style); goto fail; } /* copy the response, if there is one */ if (s->resps[i].resp != NULL && (resps[i].resp = strdup(s->resps[i].resp)) == NULL) goto enomem; resps[i].resp_retcode = s->resps[i].resp_retcode; } s->comment = NULL; *respsp = resps; return (PAM_SUCCESS); enomem: asprintf(&s->comment, "%s", strerror(ENOMEM)); fail: for (i = 0; i < nm; ++i) free(resps[i].resp); free(resps); return (PAM_CONV_ERR); }