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96 lines
2.7 KiB
96 lines
2.7 KiB
6 years ago
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--- netkit-rsh-0.17/rexecd/rexecd.c.pam-conv 2005-10-13 18:42:54.000000000 +0200
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+++ netkit-rsh-0.17/rexecd/rexecd.c 2005-10-13 18:45:30.000000000 +0200
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@@ -178,47 +178,51 @@
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static char *PAM_username;
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static char *PAM_password;
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-static int PAM_conv (int num_msg,
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- const struct pam_message **msg,
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- struct pam_response **resp,
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- void *appdata_ptr) {
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- int count = 0, replies = 0;
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- struct pam_response *reply = NULL;
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- int size = sizeof(struct pam_response);
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-
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- #define GET_MEM if (reply) realloc(reply, size); else reply = malloc(size); \
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- if (!reply) return PAM_CONV_ERR; \
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- size += sizeof(struct pam_response)
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- #define COPY_STRING(s) (s) ? strdup(s) : NULL
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-
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- for (count = 0; count < num_msg; count++) {
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- GET_MEM;
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- switch (msg[count]->msg_style) {
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- case PAM_PROMPT_ECHO_ON:
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- reply[replies].resp_retcode = PAM_SUCCESS;
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- reply[replies++].resp = COPY_STRING(PAM_username);
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- /* PAM frees resp */
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- break;
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- case PAM_PROMPT_ECHO_OFF:
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- reply[replies].resp_retcode = PAM_SUCCESS;
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- reply[replies++].resp = COPY_STRING(PAM_password);
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- /* PAM frees resp */
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- break;
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- case PAM_TEXT_INFO:
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- reply[replies].resp_retcode = PAM_SUCCESS;
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- reply[replies++].resp = NULL;
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- /* ignore it... */
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- break;
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- case PAM_ERROR_MSG:
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- reply[replies].resp_retcode = PAM_SUCCESS;
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- reply[replies++].resp = NULL;
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- /* Must be an error of some sort... */
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- default:
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- return PAM_CONV_ERR;
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- }
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- }
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- if (reply) *resp = reply;
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- return PAM_SUCCESS;
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+static int
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+PAM_conv(int num_msg, const struct pam_message **msg,
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+ struct pam_response **response, void *appdata_ptr)
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+{
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+ struct pam_response *pr;
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+ const struct pam_message *pm;
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+ int n;
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+
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+ if ((*response = malloc(num_msg * sizeof(struct pam_response))) == NULL)
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+ return(PAM_CONV_ERR);
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+ memset(*response, 0, num_msg * sizeof(struct pam_response));
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+
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+ for (pr = *response, pm = *msg, n = num_msg; n--; pr++, pm++)
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+ {
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+ switch (pm->msg_style) {
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+ case PAM_PROMPT_ECHO_ON:
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+ /* XXX: why not pam_set_item(PAM_RUSER) ? */
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+ pr->resp_retcode = PAM_SUCCESS;
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+ pr->resp = PAM_username ? strdup(PAM_username) : NULL;
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+ /* PAM frees resp */
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+ break;
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+ case PAM_PROMPT_ECHO_OFF:
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+ pr->resp_retcode = PAM_SUCCESS;
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+ pr->resp = PAM_password ? strdup(PAM_password) : NULL;
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+ /* PAM frees resp */
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+ break;
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+ case PAM_TEXT_INFO:
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+ case PAM_ERROR_MSG:
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+ /* ignore it... */
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+ pr->resp_retcode = PAM_SUCCESS;
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+ pr->resp = NULL;
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+ break;
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+ default:
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+ /* Zero and free allocated memory and return an error. */
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+ for (pr = *response, n = num_msg; n--; pr++)
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+ {
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+ if (pr->resp)
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+ free(pr->resp);
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+ }
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+ free(*response);
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+ *response = NULL;
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+ return(PAM_CONV_ERR);
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+ }
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+ }
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+ return PAM_SUCCESS;
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}
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static struct pam_conv PAM_conversation = {
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