diff options
Diffstat (limited to 'libpamc/include')
| -rw-r--r-- | libpamc/include/security/pam_client.h | 42 |
1 files changed, 23 insertions, 19 deletions
diff --git a/libpamc/include/security/pam_client.h b/libpamc/include/security/pam_client.h index 723dd88d..90040fbe 100644 --- a/libpamc/include/security/pam_client.h +++ b/libpamc/include/security/pam_client.h @@ -87,17 +87,20 @@ char **pamc_list_agents(pamc_handle_t pch); # define PAM_BP_FREE free #endif /* PAM_BP_FREE */ -#define __PAM_BP_OCTET(x,y) (*((y) + (__u8 *)(x))) +#define __PAM_BP_WOCTET(x,y) (*((y) + (__u8 *)(x))) +#define __PAM_BP_ROCTET(x,y) (*((y) + (const __u8 *)(x))) #define PAM_BP_MIN_SIZE (sizeof(__u32) + sizeof(__u8)) #define PAM_BP_MAX_LENGTH 0x20000 /* an advisory limit */ -#define PAM_BP_CONTROL(x) (__PAM_BP_OCTET(x,4)) -#define PAM_BP_SIZE(x) ((__PAM_BP_OCTET(x,0)<<24)+ \ - (__PAM_BP_OCTET(x,1)<<16)+ \ - (__PAM_BP_OCTET(x,2)<< 8)+ \ - (__PAM_BP_OCTET(x,3) )) +#define PAM_BP_WCONTROL(x) (__PAM_BP_WOCTET(x,4)) +#define PAM_BP_RCONTROL(x) (__PAM_BP_ROCTET(x,4)) +#define PAM_BP_SIZE(x) ((__PAM_BP_ROCTET(x,0)<<24)+ \ + (__PAM_BP_ROCTET(x,1)<<16)+ \ + (__PAM_BP_ROCTET(x,2)<< 8)+ \ + (__PAM_BP_ROCTET(x,3) )) #define PAM_BP_LENGTH(x) (PAM_BP_SIZE(x) - PAM_BP_MIN_SIZE) -#define PAM_BP_DATA(x) (PAM_BP_MIN_SIZE + (__u8 *) (x)) +#define PAM_BP_WDATA(x) (PAM_BP_MIN_SIZE + (__u8 *) (x)) +#define PAM_BP_RDATA(x) (PAM_BP_MIN_SIZE + (const __u8 *) (x)) /* Note, this macro always '\0' terminates renewed packets */ @@ -105,7 +108,8 @@ char **pamc_list_agents(pamc_handle_t pch); do { \ if (old_p) { \ if (*(old_p)) { \ - __u32 __size = PAM_BP_SIZE(*(old_p)); \ + __u32 __size; \ + __size = PAM_BP_SIZE(*(old_p)); \ memset(*(old_p), 0, __size); \ PAM_BP_FREE(*(old_p)); \ } \ @@ -114,10 +118,10 @@ do { \ \ __size = PAM_BP_MIN_SIZE + data_length; \ if ((*(old_p) = PAM_BP_CALLOC(1, 1+__size))) { \ - __PAM_BP_OCTET(*(old_p), 3) = __size & 0xFF; \ - __PAM_BP_OCTET(*(old_p), 2) = (__size>>=8) & 0xFF; \ - __PAM_BP_OCTET(*(old_p), 1) = (__size>>=8) & 0xFF; \ - __PAM_BP_OCTET(*(old_p), 0) = (__size>>=8) & 0xFF; \ + __PAM_BP_WOCTET(*(old_p), 3) = __size & 0xFF; \ + __PAM_BP_WOCTET(*(old_p), 2) = (__size>>=8) & 0xFF; \ + __PAM_BP_WOCTET(*(old_p), 1) = (__size>>=8) & 0xFF; \ + __PAM_BP_WOCTET(*(old_p), 0) = (__size>>=8) & 0xFF; \ (*(old_p))->control = cntrl; \ } else { \ PAM_BP_ASSERT("out of memory for binary prompt"); \ @@ -138,19 +142,19 @@ do { \ if (bp_length < ((length)+(offset))) { \ PAM_BP_ASSERT("attempt to write over end of prompt"); \ } \ - memcpy((offset) + PAM_BP_DATA(prompt), (data), (length)); \ + memcpy((offset) + PAM_BP_WDATA(prompt), (data), (length)); \ } while (0) #define PAM_BP_EXTRACT(prmpt, offset, length, data) \ do { \ - int bp_length; \ - __u8 *prompt = (__u8 *) (prmpt); \ - bp_length = PAM_BP_LENGTH(prompt); \ - if (((offset) < 0) || bp_length < ((length)+(offset)) \ - || (length) < 0) { \ + int __bp_length; \ + const __u8 *__prompt = (const __u8 *) (prmpt); \ + __bp_length = PAM_BP_LENGTH(__prompt); \ + if (((offset) < 0) || (__bp_length < ((length)+(offset))) \ + || ((length) < 0)) { \ PAM_BP_ASSERT("invalid extraction from prompt"); \ } \ - memcpy((data), (offset) + PAM_BP_DATA(prompt), (length)); \ + memcpy((data), (offset) + PAM_BP_RDATA(__prompt), (length)); \ } while (0) |