X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fafb-session.c;h=61aa3f61914195551b0eecdbb0221696401f2814;hb=6f13ad1989875b5a0ce50b24211fd1fba093735f;hp=8c0f77b85ddfd150832f7379c43c5b9961de856a;hpb=24d000c2290126abf88204089d132229d63f9a05;p=src%2Fapp-framework-binder.git diff --git a/src/afb-session.c b/src/afb-session.c index 8c0f77b8..61aa3f61 100644 --- a/src/afb-session.c +++ b/src/afb-session.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2015-2018 "IoT.bzh" + * Copyright (C) 2015-2019 "IoT.bzh" * Author "Fulup Ar Foll" * Author: José Bollo * @@ -24,16 +24,14 @@ #include #include #include -#include #include -#include - #include "afb-session.h" #include "afb-hook.h" #include "verbose.h" +#include "pearson.h" +#include "uuid.h" -#define SIZEUUID 37 #define HEADCOUNT 16 #define COOKIECOUNT 8 #define COOKIEMASK (COOKIECOUNT - 1) @@ -43,41 +41,46 @@ #define MAX_EXPIRATION (_MAXEXP_ >= 0 ? _MAXEXP_ : _MAXEXP2_) #define NOW (time_now()) -/* structure for a cookie added to sessions */ +/** + * structure for a cookie added to sessions + */ struct cookie { - struct cookie *next; /* link to next cookie */ - const void *key; /* pointer key */ - void *value; /* value */ - void (*freecb)(void*); /* function to call when session is closed */ + struct cookie *next; /**< link to next cookie */ + const void *key; /**< pointer key */ + void *value; /**< value */ + void (*freecb)(void*); /**< function to call when session is closed */ }; -/* +/** * structure for session */ struct afb_session { - struct afb_session *next; /* link to the next */ - unsigned refcount; /* external reference count of the session */ - int timeout; /* timeout of the session */ - time_t expiration; /* expiration time of the token */ - pthread_mutex_t mutex; /* mutex of the session */ - struct cookie *cookies[COOKIECOUNT]; /* cookies of the session */ - uint8_t closed: 1; /* is the session closed ? */ - uint8_t autoclose: 1; /* close the session when unreferenced */ - uint8_t notinset: 1; /* session removed from the set of sessions */ - char uuid[SIZEUUID]; /* long term authentication of remote client */ - char token[SIZEUUID]; /* short term authentication of remote client */ + struct afb_session *next; /**< link to the next */ + unsigned refcount; /**< count of reference to the session */ + int timeout; /**< timeout of the session */ + time_t expiration; /**< expiration time of the token */ + pthread_mutex_t mutex; /**< mutex of the session */ + struct cookie *cookies[COOKIECOUNT]; /**< cookies of the session */ + char *lang; /**< current language setting for the session */ + uint8_t closed: 1; /**< is the session closed ? */ + uint8_t autoclose: 1; /**< close the session when unreferenced */ + uint8_t notinset: 1; /**< session removed from the set of sessions */ + uuid_stringz_t uuid; /**< long term authentication of remote client */ + uuid_stringz_t token; /**< short term authentication of remote client */ }; -/* Session UUID are store in a simple array [for 10 sessions this should be enough] */ +/** + * structure for managing sessions + */ static struct { - int count; /* current number of sessions */ - int max; /* maximum count of sessions */ - int timeout; /* common initial timeout */ - struct afb_session *heads[HEADCOUNT]; /* sessions */ - char initok[SIZEUUID]; /* common initial token */ - pthread_mutex_t mutex; /* declare a mutex to protect hash table */ + int count; /**< current number of sessions */ + int max; /**< maximum count of sessions */ + int timeout; /**< common initial timeout */ + struct afb_session *heads[HEADCOUNT]; /**< sessions */ + uuid_stringz_t initok; /**< common initial token */ + pthread_mutex_t mutex; /**< declare a mutex to protect hash table */ } sessions = { .count = 0, .max = 10, @@ -87,7 +90,9 @@ static struct { .mutex = PTHREAD_MUTEX_INITIALIZER }; -/* Get the actual raw time */ +/** + * Get the actual raw time + */ static inline time_t time_now() { struct timespec ts; @@ -95,34 +100,6 @@ static inline time_t time_now() return ts.tv_sec; } -/* generate a new fresh 'uuid' */ -static void new_uuid(char uuid[SIZEUUID]) -{ - uuid_t newuuid; - uuid_generate(newuuid); - uuid_unparse_lower(newuuid, uuid); -} - -/* - * Returns a tiny hash value for the 'text'. - * - * Tiny hash function inspired from pearson - */ -static uint8_t pearson4(const char *text) -{ - static uint8_t T[16] = { - 4, 1, 6, 0, 9, 14, 11, 5, - 2, 3, 12, 15, 10, 7, 8, 13 - }; - uint8_t r, c; - - for (r = 0; (c = (uint8_t)*text) ; text++) { - r = T[r ^ (15 & c)]; - r = T[r ^ (c >> 4)]; - } - return r; // % HEADCOUNT; -} - /* lock the set of sessions for exclusive access */ static inline void sessionset_lock() { @@ -155,7 +132,7 @@ static struct afb_session *sessionset_search(const char *uuid, uint8_t hashidx) static int sessionset_add(struct afb_session *session, uint8_t hashidx) { /* check availability */ - if (sessions.count >= sessions.max) { + if (sessions.max && sessions.count >= sessions.max) { errno = EBUSY; return -1; } @@ -168,12 +145,12 @@ static int sessionset_add(struct afb_session *session, uint8_t hashidx) } /* make a new uuid not used in the set of sessions */ -static uint8_t sessionset_make_uuid (char uuid[SIZEUUID]) +static uint8_t sessionset_make_uuid (uuid_stringz_t uuid) { uint8_t hashidx; do { - new_uuid(uuid); + uuid_new_stringz(uuid); hashidx = pearson4(uuid); } while(sessionset_search(uuid, hashidx)); return hashidx; @@ -202,8 +179,10 @@ static void session_close(struct afb_session *session) /* close it now */ session->closed = 1; +#if WITH_AFB_HOOK /* emit the hook */ afb_hook_session_close(session); +#endif /* release cookies */ for (idx = 0 ; idx < COOKIECOUNT ; idx++) { @@ -220,8 +199,11 @@ static void session_close(struct afb_session *session) /* destroy the 'session' */ static void session_destroy (struct afb_session *session) { +#if WITH_AFB_HOOK afb_hook_session_destroy(session); +#endif pthread_mutex_destroy(&session->mutex); + free(session->lang); free(session); } @@ -277,7 +259,9 @@ static struct afb_session *session_add(const char *uuid, int timeout, time_t now return NULL; } +#if WITH_AFB_HOOK afb_hook_session_create(session); +#endif return session; } @@ -321,7 +305,7 @@ static time_t sessionset_cleanup (int force) * @param max_session_count maximum allowed session count in the same time * @param timeout the initial default timeout of sessions * @param initok the initial default token of sessions - * + * */ int afb_session_init (int max_session_count, int timeout, const char *initok) { @@ -339,7 +323,7 @@ int afb_session_init (int max_session_count, int timeout, const char *initok) sessions.max = max_session_count; sessions.timeout = timeout; if (initok == NULL) - new_uuid(sessions.initok); + uuid_new_stringz(sessions.initok); else strcpy(sessions.initok, initok); sessionset_unlock(); @@ -435,7 +419,7 @@ int afb_session_what_remains(struct afb_session *session) /* This function will return exiting session or newly created session */ struct afb_session *afb_session_get (const char *uuid, int timeout, int *created) { - char _uuid_[SIZEUUID]; + uuid_stringz_t _uuid_; uint8_t hashidx; struct afb_session *session; time_t now; @@ -474,7 +458,9 @@ end: struct afb_session *afb_session_addref(struct afb_session *session) { if (session != NULL) { +#if WITH_AFB_HOOK afb_hook_session_addref(session); +#endif session_lock(session); session->refcount++; session_unlock(session); @@ -488,7 +474,9 @@ void afb_session_unref(struct afb_session *session) if (session == NULL) return; +#if WITH_AFB_HOOK afb_hook_session_unref(session); +#endif session_lock(session); if (!--session->refcount) { if (session->autoclose) @@ -513,7 +501,7 @@ void afb_session_close (struct afb_session *session) * Set the 'autoclose' flag of the 'session' * * A session whose autoclose flag is true will close as - * soon as it is no more referenced. + * soon as it is no more referenced. * * @param session the session to set * @param autoclose the value to set @@ -537,7 +525,7 @@ int afb_session_check_token (struct afb_session *session, const char *token) { int r; - session_unlock(session); + session_lock(session); r = !session->closed && session->expiration >= NOW && !(session->token[0] && strcmp (token, session->token)); @@ -548,10 +536,12 @@ int afb_session_check_token (struct afb_session *session, const char *token) /* generate a new token and update client context */ void afb_session_new_token (struct afb_session *session) { - session_unlock(session); - new_uuid(session->token); + session_lock(session); + uuid_new_stringz(session->token); session_update_expiration(session, NOW); +#if WITH_AFB_HOOK afb_hook_session_renew(session); +#endif session_unlock(session); } @@ -589,7 +579,7 @@ static int cookeyidx(const void *key) * @param makecb the creation function or NULL * @param freecb the release function or NULL * @param closure an argument for makecb or the value if makecb==NULL - * @param replace a boolean enforcing replecement of the previous value + * @param replace a boolean enforcing replacement of the previous value * * @return the value of the cookie * @@ -694,11 +684,44 @@ void *afb_session_get_cookie(struct afb_session *session, const void *key) * @param value the value to store at key * @param freecb a function to use when the cookie value is to remove (or null) * - * @return the data staored for the key or NULL if the key isn't found - * + * @return 0 in case of success or -1 in case of error */ int afb_session_set_cookie(struct afb_session *session, const void *key, void *value, void (*freecb)(void*)) { return -(value != afb_session_cookie(session, key, NULL, freecb, value, 1)); } +/** + * Set the language attached to the session + * + * @param session the session to set + * @param lang the language specifiction to set to session + * + * @return 0 in case of success or -1 in case of error + */ +int afb_session_set_language(struct afb_session *session, const char *lang) +{ + char *oldl, *newl; + + newl = strdup(lang); + if (newl == NULL) + return -1; + + oldl = session->lang; + session->lang = newl; + free(oldl); + return 0; +} + +/** + * Get the language attached to the session + * + * @param session the session to query + * @param lang a default language specifiction + * + * @return the langauage specification to use for session + */ +const char *afb_session_get_language(struct afb_session *session, const char *lang) +{ + return session->lang ?: lang; +}