x_algor.c 分析
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相关的变量定义
typedef struct X509_algor_st X509_ALGOR;struct X509_algor_st {ASN1_OBJECT *algorithm;ASN1_TYPE *parameter;} /* X509_ALGOR */ ;
x_algor.c 中的宏展开
ASN1_SEQUENCE(X509_ALGOR) = {ASN1_SIMPLE(X509_ALGOR, algorithm, ASN1_OBJECT),ASN1_OPT(X509_ALGOR, parameter, ASN1_ANY)} 定义了如下全局变量：static const ASN1_TEMPLATE X509_ALGOR_seq_tt[] = {{ (0), (0), __builtin_offsetof (X509_ALGOR, algorithm), "algorithm", (&(ASN1_OBJECT_it)) },{ ((0x1)), (0), __builtin_offsetof (X509_ALGOR, parameter), "parameter", (&(ASN1_ANY_it)) }} ;ASN1_SEQUENCE_END(X509_ALGOR) 定义了如下全局变量：const ASN1_ITEM X509_ALGOR_it ={ 0x1,16,X509_ALGOR_seq_tt,sizeof(X509_ALGOR_seq_tt) / sizeof(ASN1_TEMPLATE),((void *)0),sizeof(X509_ALGOR),"X509_ALGOR" };ASN1_ITEM_TEMPLATE(X509_ALGORS) =ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR)定义了如下全局变量：static const ASN1_TEMPLATE X509_ALGORS_item_tt ={ ((0x2 << 1)), (0), 0, "algorithms", (&(X509_ALGOR_it)) };ASN1_ITEM_TEMPLATE_END(X509_ALGORS) 定义了如下全局变量：const ASN1_ITEM X509_ALGORS_it = { 0x0, -1, &X509_ALGORS_item_tt, 0, ((void *)0), 0, "X509_ALGORS" };
可以看出，主要有两种类型的全局变量：ASN1_TEMPLATE和ASN1_ITEM。
两个结构体的定义如下：
typedef struct ASN1_ITEM_st ASN1_ITEM;typedef const ASN1_ITEM ASN1_ITEM_EXP;typedef struct ASN1_TEMPLATE_st {unsigned long flags; //Various flagslong tag; //tag, not used if no taggingunsigned long offset; //本例中，ASN1_TEMPLATE中定义的某类型结构中某个参数的偏移值，比如X509_ALGOR中algorithm的偏移const char *field_name; //参数名字ASN1_ITEM_EXP *item; //本参数指定的ASN1_ITEM全局变量指针，定义中tasn_type.c中 Relevant ASN1_ITEM or ASN1_ADB}ASN1_TEMPLATE;struct ASN1_ITEM_st {char itype; //The item type, primitive, SEQUENCE, CHOICEor externlong utype; //underlying type, ASN1_ITEM的类型，比如SEQUENCE是16，未定义的-1const ASN1_TEMPLATE *templates; //指明的ASN1_TEMPLATE; If SEQUENCE or CHOICE this contains the contentslong tcount; //ASN1_TEMPLATE模板数组中模板的个数 Number of templates if SEQUENCE or CHOICEconst void *funcs; //functions that handle this typelong size; //该ASN1_ITEM实际结构体的大小，此例中为X509_ALGOR Structure size (usually)const char *sname; //该ASN1_ITEM的名字，此例中为"X509_ALGOR"};
IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR) 定义了多个函数X509_ALGOR *d2i_X509_ALGOR(X509_ALGOR **a, const unsigned char **in, long len){return (X509_ALGOR *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, (&(X509_ALGOR_it)));}int i2d_X509_ALGOR(X509_ALGOR *a, unsigned char **out){return ASN1_item_i2d((ASN1_VALUE *)a, out, (&(X509_ALGOR_it)));}X509_ALGOR *X509_ALGOR_new(void){return (X509_ALGOR *)ASN1_item_new((&(X509_ALGOR_it)));}void X509_ALGOR_free(X509_ALGOR *a){ASN1_item_free((ASN1_VALUE *)a, (&(X509_ALGOR_it)));}IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_ALGORS, X509_ALGORS, X509_ALGORS) 定义了两个函数X509_ALGORS *d2i_X509_ALGORS(X509_ALGORS **a, const unsigned char **in, long len){return (X509_ALGORS *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, (&(X509_ALGORS_it)));}int i2d_X509_ALGORS(X509_ALGORS *a, unsigned char **out){return ASN1_item_i2d((ASN1_VALUE *)a, out, (&(X509_ALGORS_it)));}IMPLEMENT_ASN1_DUP_FUNCTION(X509_ALGOR) 定义了一个函数X509_ALGOR * X509_ALGOR_dup(X509_ALGOR *x){return ASN1_item_dup((&(X509_ALGOR_it)), x);}
下面是一个例子，根据例子通过GDB来 具体跟踪一下这几个函数。
例子如下：
#include <string.h>#include <openssl/x509.h>int main(){FILE *fp;char *buf,*p;char data[]={"12345678"},read[1024];int len;X509_ALGOR *alg=NULL,*alg2=NULL,*alg3=NULL;/* new 函数 */alg=X509_ALGOR_new();/* 构造内容 */alg->algorithm=OBJ_nid2obj(NID_sha256);alg->parameter=ASN1_TYPE_new();ASN1_TYPE_set_octetstring(alg->parameter,data,strlen(data));/* i2d 函数 */len=i2d_X509_ALGOR(alg,NULL);p=buf=malloc(len);len=i2d_X509_ALGOR(alg,(unsigned char **)&p);/* 写入文件 */fp=fopen("alg.cer","wb");fwrite(buf,1,len,fp);fclose(fp);/* 读文件 */fp=fopen("alg.cer","rb");len=fread(read,1,1024,fp);fclose(fp);p=read;/* d2i 函数 */d2i_X509_ALGOR(&alg2,(const unsigned char **)&p,len);if(alg2==NULL){printf("err\n");}/* dup 函数 */alg3=X509_ALGOR_dup(alg);/* free 函数 */X509_ALGOR_free(alg);if(alg2)X509_ALGOR_free(alg2);X509_ALGOR_free(alg3);free(buf);return 0;}
X509_ALGOR_new：创建一个X509_ALGOR，返回X509_ALGOR类型的对象
-->ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)：注意，这里返回的是ASN1_VALUE*，入参是ANS1_ITEM*
ASN1_VALUE的定义中asn1.h中：typedef struct ASN1_VALUE_st ASN1_VALUE;实际找这个ASN_VALUE_st是找不到的，可以看定义处源码上的注释，这里实际是
C语言的一种特殊用法（c anonymous struct），源码中使用此类型都是强转为其他类型的，这里这个类型就相当于void*。
入参是一个ASN1_ITEM类型，可以看到这里传进来的是 X509_ALGOR_it；
-->ASN1_item_ex_new
-->asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine)
//这里入参1是需要返回的创建对象；入参2是X509_ALGOR_it；入参3是0
具体的栈信息如下：
12 alg=X509_ALGOR_new();(gdb) sX509_ALGOR_new () at x_algor.c:7474IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR)(gdb) sASN1_item_new (it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_new.c:7575 ASN1_VALUE *ret = NULL;(gdb) n76 if (ASN1_item_ex_new(&ret, it) > 0)(gdb) sASN1_item_ex_new (pval=0x7fffffffdfa8, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_new.c:8585 return asn1_item_ex_combine_new(pval, it, 0);(gdb) sasn1_item_ex_combine_new (pval=0x7fffffffdfa8, it=0x7ffff7dbed80 <X509_ALGOR_it>, combine=0) at tasn_new.c:9191 const ASN1_TEMPLATE *tt = NULL;(gdb) n94 const ASN1_AUX *aux = it->funcs;(gdb)98 if (aux && aux->asn1_cb)(gdb)101 asn1_cb = 0;(gdb)104 if (it->sname)(gdb) n105 CRYPTO_push_info(it->sname);(gdb) sCRYPTO_push_info_ (info=0x7ffff7b73655 "X509_ALGOR", file=0x7ffff7b7408c "tasn_new.c", line=105) at mem_dbg.c:392392 int ret = 0;(gdb) n394 if (is_MemCheck_on()) {(gdb)432 return (ret);(gdb) n433}(gdb)asn1_item_ex_combine_new (pval=0x7fffffffdfa8, it=0x7ffff7dbed80 <X509_ALGOR_it>, combine=0) at tasn_new.c:108108 switch (it->itype) {(gdb)166 if (asn1_cb) {(gdb)178 if (!combine) {(gdb) p *it$1 = {itype = 1 '\001', utype = 16, templates = 0x7ffff7dc58a0 <X509_ALGOR_seq_tt>, tcount = 2, funcs = 0x0, size = 16, sname = 0x7ffff7b73655 "X509_ALGOR"}(gdb) n179 *pval = OPENSSL_malloc(it->size);(gdb) n180 if (!*pval)(gdb) n182 memset(*pval, 0, it->size);(gdb) p it->size$2 = 16(gdb) n183 asn1_do_lock(pval, 0, it);(gdb) sasn1_do_lock (pval=0x7fffffffdfa8, op=0, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_utl.c:107107 if ((it->itype != ASN1_ITYPE_SEQUENCE)(gdb) n110 aux = it->funcs;(gdb) n111 if (!aux || !(aux->flags & ASN1_AFLG_REFCOUNT))(gdb) p aux$3 = (const ASN1_AUX *) 0x0(gdb) n112 return 0;(gdb) n127}(gdb) nasn1_item_ex_combine_new (pval=0x7fffffffdfa8, it=0x7ffff7dbed80 <X509_ALGOR_it>, combine=0) at tasn_new.c:184184 asn1_enc_init(pval, it);(gdb) sasn1_enc_init (pval=0x7fffffffdfa8, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_utl.c:143143 enc = asn1_get_enc_ptr(pval, it);(gdb) sasn1_get_enc_ptr (pval=0x7fffffffdfa8, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_utl.c:132132 if (!pval || !*pval)(gdb) n134 aux = it->funcs;(gdb) n135 if (!aux || !(aux->flags & ASN1_AFLG_ENCODING))(gdb) n136 return NULL;(gdb) n138}(gdb) nasn1_enc_init (pval=0x7fffffffdfa8, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_utl.c:144144 if (enc) {(gdb) n149}(gdb) nasn1_item_ex_combine_new (pval=0x7fffffffdfa8, it=0x7ffff7dbed80 <X509_ALGOR_it>, combine=0) at tasn_new.c:186186 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {(gdb) n187 pseqval = asn1_get_field_ptr(pval, tt);(gdb) sasn1_get_field_ptr (pval=0x7fffffffdfa8, tt=0x7ffff7dc58a0 <X509_ALGOR_seq_tt>) at tasn_utl.c:204204 if (tt->flags & ASN1_TFLG_COMBINE)(gdb) n206 pvaltmp = offset2ptr(*pval, tt->offset);(gdb) p pval$4 = (ASN1_VALUE **) 0x7fffffffdfa8(gdb) n211 return pvaltmp;(gdb) p pvaltmp$5 = (ASN1_VALUE **) 0x603010(gdb) p *pval$6 = (ASN1_VALUE *) 0x603010(gdb) p tt->offset$7 = 0(gdb) n212}(gdb) nasn1_item_ex_combine_new (pval=0x7fffffffdfa8, it=0x7ffff7dbed80 <X509_ALGOR_it>, combine=0) at tasn_new.c:188188 if (!ASN1_template_new(pseqval, tt))(gdb) sASN1_template_new (pval=0x603010, tt=0x7ffff7dc58a0 <X509_ALGOR_seq_tt>) at tasn_new.c:256256 const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);(gdb) p *tt$8 = {flags = 0, tag = 0, offset = 0, field_name = 0x7ffff7b73641 "algorithm", item = 0x7ffff7dbf740 <ASN1_OBJECT_it>}(gdb) p tt->item$9 = (ASN1_ITEM_EXP *) 0x7ffff7dbf740 <ASN1_OBJECT_it>(gdb) p *tt->item$10 = {itype = 0 '\000', utype = 6, templates = 0x0, tcount = 0, funcs = 0x0, size = 0, sname = 0x7ffff7b742c9 "ASN1_OBJECT"}(gdb) n258 if (tt->flags & ASN1_TFLG_OPTIONAL) {(gdb) n264 if (tt->flags & ASN1_TFLG_ADB_MASK) {(gdb) n269 if (tt->field_name)(gdb) n270 CRYPTO_push_info(tt->field_name);(gdb)273 if (tt->flags & ASN1_TFLG_SK_MASK) {(gdb)286 ret = asn1_item_ex_combine_new(pval, it, tt->flags & ASN1_TFLG_COMBINE);(gdb) sasn1_item_ex_combine_new (pval=0x603010, it=0x7ffff7dbf740 <ASN1_OBJECT_it>, combine=0) at tasn_new.c:9191 const ASN1_TEMPLATE *tt = NULL;(gdb) n94 const ASN1_AUX *aux = it->funcs;(gdb) n98 if (aux && aux->asn1_cb)(gdb)101 asn1_cb = 0;(gdb)104 if (it->sname)(gdb)105 CRYPTO_push_info(it->sname);(gdb)108 switch (it->itype) {(gdb)128 if (it->templates) {(gdb) p *it$11 = {itype = 0 '\000', utype = 6, templates = 0x0, tcount = 0, funcs = 0x0, size = 0, sname = 0x7ffff7b742c9 "ASN1_OBJECT"}(gdb) n131 } else if (!ASN1_primitive_new(pval, it))(gdb) sASN1_primitive_new (pval=0x603010, it=0x7ffff7dbf740 <ASN1_OBJECT_it>) at tasn_new.c:315315 if (!it)(gdb) n318 if (it->funcs) {(gdb)324 if (it->itype == ASN1_ITYPE_MSTRING)(gdb)327 utype = it->utype;(gdb) n328 switch (utype) {(gdb) n330 *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);(gdb) sOBJ_nid2obj (n=0) at obj_dat.c:318318 if ((n >= 0) && (n < NUM_NID)) {(gdb) n319 if ((n != NID_undef) && (nid_objs[n].nid == NID_undef)) {(gdb) n323 return ((ASN1_OBJECT *)&(nid_objs[n]));(gdb) n338}(gdb) nASN1_primitive_new (pval=0x603010, it=0x7ffff7dbf740 <ASN1_OBJECT_it>) at tasn_new.c:331331 return 1;(gdb) n360}(gdb)asn1_item_ex_combine_new (pval=0x603010, it=0x7ffff7dbf740 <ASN1_OBJECT_it>, combine=0) at tasn_new.c:133133 break;(gdb)196 if (it->sname)(gdb)197 CRYPTO_pop_info();(gdb)199 return 1;(gdb)218}(gdb)ASN1_template_new (pval=0x603010, tt=0x7ffff7dc58a0 <X509_ALGOR_seq_tt>) at tasn_new.c:289289 if (it->sname)(gdb)290 CRYPTO_pop_info();(gdb)292 return ret;(gdb)293}(gdb)asn1_item_ex_combine_new (pval=0x7fffffffdfa8, it=0x7ffff7dbed80 <X509_ALGOR_it>, combine=0) at tasn_new.c:186186 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {(gdb)187 pseqval = asn1_get_field_ptr(pval, tt);(gdb)188 if (!ASN1_template_new(pseqval, tt))(gdb) sASN1_template_new (pval=0x603018, tt=0x7ffff7dc58c8 <X509_ALGOR_seq_tt+40>) at tasn_new.c:256256 const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);(gdb) n258 if (tt->flags & ASN1_TFLG_OPTIONAL) {(gdb)259 asn1_template_clear(pval, tt);(gdb) sasn1_template_clear (pval=0x603018, tt=0x7ffff7dc58c8 <X509_ALGOR_seq_tt+40>) at tasn_new.c:298298 if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK))(gdb) n301 asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));(gdb) sasn1_item_clear (pval=0x603018, it=0x7ffff7dbfa00 <ASN1_ANY_it>) at tasn_new.c:224224 switch (it->itype) {(gdb) n235 if (it->templates)(gdb)238 asn1_primitive_clear(pval, it);(gdb) p *it$12 = {itype = 0 '\000', utype = -4, templates = 0x0, tcount = 0, funcs = 0x0, size = 0, sname = 0x7ffff7b74384 "ASN1_ANY"}(gdb) sasn1_primitive_clear (pval=0x603018, it=0x7ffff7dbfa00 <ASN1_ANY_it>) at tasn_new.c:365365 if (it && it->funcs) {(gdb) n373 if (!it || (it->itype == ASN1_ITYPE_MSTRING))(gdb) n376 utype = it->utype;(gdb)377 if (utype == V_ASN1_BOOLEAN)(gdb) p utype$13 = -4(gdb) n380 *pval = NULL;(gdb)381}(gdb)asn1_item_clear (pval=0x603018, it=0x7ffff7dbfa00 <ASN1_ANY_it>) at tasn_new.c:239239 break;(gdb)252}(gdb)asn1_template_clear (pval=0x603018, tt=0x7ffff7dc58c8 <X509_ALGOR_seq_tt+40>) at tasn_new.c:302302}(gdb) nASN1_template_new (pval=0x603018, tt=0x7ffff7dc58c8 <X509_ALGOR_seq_tt+40>) at tasn_new.c:260260 return 1;(gdb) n293}(gdb) nasn1_item_ex_combine_new (pval=0x7fffffffdfa8, it=0x7ffff7dbed80 <X509_ALGOR_it>, combine=0) at tasn_new.c:186186 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {(gdb) n191 if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))(gdb) p pseqval$14 = (ASN1_VALUE **) 0x603018(gdb) p pval$15 = (ASN1_VALUE **) 0x7fffffffdfa8(gdb) p *pval$16 = (ASN1_VALUE *) 0x603010(gdb) p asn1_cb$17 = (ASN1_aux_cb *) 0x0(gdb) n193 break;(gdb) p *(X509_ALGOR*)pval$18 = {algorithm = 0x603010, parameter = 0x7fffffffdfc0}(gdb) p *(X509_ALGOR*)pval->parameterThere is no member named parameter.(gdb) p *((X509_ALGOR*)pval)->parameter)Junk after end of expression.(gdb) p *(((X509_ALGOR*)pval)->parameter)$19 = {type = -7136, value = {ptr = 0x400b0d <main+61> "H\211E\370\277\240\002", boolean = 4197133, asn1_string = 0x400b0d <main+61>, object = 0x400b0d <main+61>,integer = 0x400b0d <main+61>, enumerated = 0x400b0d <main+61>, bit_string = 0x400b0d <main+61>, octet_string = 0x400b0d <main+61>, printablestring = 0x400b0d <main+61>,t61string = 0x400b0d <main+61>, ia5string = 0x400b0d <main+61>, generalstring = 0x400b0d <main+61>, bmpstring = 0x400b0d <main+61>, universalstring = 0x400b0d <main+61>,utctime = 0x400b0d <main+61>, generalizedtime = 0x400b0d <main+61>, visiblestring = 0x400b0d <main+61>, utf8string = 0x400b0d <main+61>, set = 0x400b0d <main+61>,sequence = 0x400b0d <main+61>, asn1_value = 0x400b0d <main+61>}}(gdb) n196 if (it->sname)(gdb) n197 CRYPTO_pop_info();(gdb) n199 return 1;(gdb) n218}(gdb) nASN1_item_ex_new (pval=0x7fffffffdfa8, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_new.c:8686}(gdb) nASN1_item_new (it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_new.c:7777 return ret;(gdb) n79}(gdb) nmain () at openssl_x_algor_test.c:1414 alg->algorithm=OBJ_nid2obj(NID_sha256);(gdb) sOBJ_nid2obj (n=672) at obj_dat.c:318318 if ((n >= 0) && (n < NUM_NID)) {(gdb) n319 if ((n != NID_undef) && (nid_objs[n].nid == NID_undef)) {(gdb) n323 return ((ASN1_OBJECT *)&(nid_objs[n]));(gdb) n338}(gdb) nmain () at openssl_x_algor_test.c:1515 alg->parameter=ASN1_TYPE_new();(gdb) p alg->parameter$20 = (ASN1_TYPE *) 0x0(gdb) p *alg$21 = {algorithm = 0x7ffff7db7d40 <nid_objs+26880>, parameter = 0x0}(gdb) p *alg->algorithm$22 = {sn = 0x7ffff7b3263f "SHA256", ln = 0x7ffff7b32646 "sha256", nid = 672, length = 9,data = 0x7ffff7b2e7dc <lvalues+4540> "`\206H\001e\003\004\002\001`\206H\001e\003\004\002\002`\206H\001e\003\004\002\003`\206H\001e\003\004\002\004++\201\004g+g+\001*\206H\316=\001\002\003*\206H\316=\001\002\003\001*\206H\316=\001\002\003\002*\206H\316=\001\002\003\003*\206H\316=\003", flags = 0}(gdb) sASN1_TYPE_new () at tasn_typ.c:118118IMPLEMENT_ASN1_FUNCTIONS_fname(ASN1_TYPE, ASN1_ANY, ASN1_TYPE)(gdb) sASN1_item_new (it=0x7ffff7dbfa00 <ASN1_ANY_it>) at tasn_new.c:7575 ASN1_VALUE *ret = NULL;(gdb) n76 if (ASN1_item_ex_new(&ret, it) > 0)(gdb) sASN1_item_ex_new (pval=0x7fffffffdfa8, it=0x7ffff7dbfa00 <ASN1_ANY_it>) at tasn_new.c:8585 return asn1_item_ex_combine_new(pval, it, 0);(gdb) sasn1_item_ex_combine_new (pval=0x7fffffffdfa8, it=0x7ffff7dbfa00 <ASN1_ANY_it>, combine=0) at tasn_new.c:9191 const ASN1_TEMPLATE *tt = NULL;(gdb) n94 const ASN1_AUX *aux = it->funcs;(gdb) n98 if (aux && aux->asn1_cb)(gdb)101 asn1_cb = 0;(gdb)104 if (it->sname)(gdb)105 CRYPTO_push_info(it->sname);(gdb)108 switch (it->itype) {(gdb)128 if (it->templates) {(gdb)131 } else if (!ASN1_primitive_new(pval, it))(gdb) sASN1_primitive_new (pval=0x7fffffffdfa8, it=0x7ffff7dbfa00 <ASN1_ANY_it>) at tasn_new.c:315315 if (!it)(gdb) p *it$23 = {itype = 0 '\000', utype = -4, templates = 0x0, tcount = 0, funcs = 0x0, size = 0, sname = 0x7ffff7b74384 "ASN1_ANY"}(gdb) n318 if (it->funcs) {(gdb)324 if (it->itype == ASN1_ITYPE_MSTRING)(gdb)327 utype = it->utype;(gdb)328 switch (utype) {(gdb)342 typ = OPENSSL_malloc(sizeof(ASN1_TYPE));(gdb) p utype$24 = -4(gdb) n343 if (!typ)(gdb) n345 typ->value.ptr = NULL;(gdb) n346 typ->type = -1;(gdb) n347 *pval = (ASN1_VALUE *)typ;(gdb)348 break;(gdb)357 if (*pval)(gdb)358 return 1;(gdb)360}(gdb)asn1_item_ex_combine_new (pval=0x7fffffffdfa8, it=0x7ffff7dbfa00 <ASN1_ANY_it>, combine=0) at tasn_new.c:133133 break;(gdb)196 if (it->sname)(gdb)197 CRYPTO_pop_info();(gdb)199 return 1;(gdb)218}(gdb)ASN1_item_ex_new (pval=0x7fffffffdfa8, it=0x7ffff7dbfa00 <ASN1_ANY_it>) at tasn_new.c:8686}(gdb)ASN1_item_new (it=0x7ffff7dbfa00 <ASN1_ANY_it>) at tasn_new.c:7777 return ret;(gdb)79}(gdb)main () at openssl_x_algor_test.c:1616 ASN1_TYPE_set_octetstring(alg->parameter,data,strlen(data));(gdb) sASN1_TYPE_set_octetstring (a=0x603030, data=0x7fffffffe3e0 "12345678", len=8) at evp_asn1.c:6868 if ((os = M_ASN1_OCTET_STRING_new()) == NULL)(gdb) sASN1_STRING_type_new (type=4) at asn1_lib.c:412412 ret = (ASN1_STRING *)OPENSSL_malloc(sizeof(ASN1_STRING));(gdb) n413 if (ret == NULL) {(gdb)417 ret->length = 0;(gdb) p *ret$25 = {length = 0, type = 0, data = 0x0, flags = 0}(gdb) n418 ret->type = type;(gdb)419 ret->data = NULL;(gdb) n420 ret->flags = 0;(gdb)421 return (ret);(gdb)422}(gdb)ASN1_TYPE_set_octetstring (a=0x603030, data=0x7fffffffe3e0 "12345678", len=8) at evp_asn1.c:7070 if (!M_ASN1_OCTET_STRING_set(os, data, len)) {(gdb) sASN1_STRING_set (str=0x603050, _data=0x7fffffffe3e0, len=8) at asn1_lib.c:365365 const char *data = _data;(gdb)367 if (len < 0) {(gdb)373 if ((str->length < len) || (str->data == NULL)) {(gdb)374 c = str->data;(gdb)375 if (c == NULL)(gdb)376 str->data = OPENSSL_malloc(len + 1);(gdb) p *str$26 = {length = 0, type = 4, data = 0x0, flags = 0}(gdb) n380 if (str->data == NULL) {(gdb) n386 str->length = len;(gdb) n387 if (data != NULL) {(gdb) n388 memcpy(str->data, data, len);(gdb) n390 str->data[len] = '\0';(gdb) n392 return (1);(gdb) n393}(gdb) nASN1_TYPE_set_octetstring (a=0x603030, data=0x7fffffffe3e0 "12345678", len=8) at evp_asn1.c:7474 ASN1_TYPE_set(a, V_ASN1_OCTET_STRING, os);(gdb) sASN1_TYPE_set (a=0x603030, type=4, value=0x603050) at a_type.c:7474 if (a->value.ptr != NULL) {(gdb) n78 a->type = type;(gdb) nnUndefined command: "nn". Try "help".(gdb) n79 if (type == V_ASN1_BOOLEAN)(gdb) n82 a->value.ptr = value;(gdb) n83}(gdb) nASN1_TYPE_set_octetstring (a=0x603030, data=0x7fffffffe3e0 "12345678", len=8) at evp_asn1.c:7575 return (1);(gdb) n76}(gdb) nmain () at openssl_x_algor_test.c:1818 len=i2d_X509_ALGOR(alg,NULL);(gdb) si2d_X509_ALGOR (a=0x603010, out=0x0) at x_algor.c:7474IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR)(gdb) sASN1_item_i2d (val=0x603010, out=0x0, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_enc.c:9090 return asn1_item_flags_i2d(val, out, it, 0);(gdb) sasn1_item_flags_i2d (val=0x603010, out=0x0, it=0x7ffff7dbed80 <X509_ALGOR_it>, flags=0) at tasn_enc.c:103103 if (out && !*out) {(gdb) n118 return ASN1_item_ex_i2d(&val, out, it, -1, flags);(gdb) sASN1_item_ex_i2d (pval=0x7fffffffdf48, out=0x0, it=0x7ffff7dbed80 <X509_ALGOR_it>, tag=-1, aclass=0) at tasn_enc.c:129129 const ASN1_TEMPLATE *tt = NULL;(gdb) n130 unsigned char *p = NULL;(gdb) n131 int i, seqcontlen, seqlen, ndef = 1;(gdb)134 const ASN1_AUX *aux = it->funcs;(gdb)135 ASN1_aux_cb *asn1_cb = 0;(gdb)137 if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)(gdb) n140 if (aux && aux->asn1_cb)(gdb) n143 switch (it->itype) {(gdb) n197 i = asn1_enc_restore(&seqcontlen, out, pval, it);(gdb) p it->itype$27 = 1 '\001'(gdb) p *pval$28 = (ASN1_VALUE *) 0x603010(gdb) sasn1_enc_restore (len=0x7fffffffdeac, out=0x0, pval=0x7fffffffdf48, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_utl.c:188188 enc = asn1_get_enc_ptr(pval, it);(gdb) sasn1_get_enc_ptr (pval=0x7fffffffdf48, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_utl.c:132132 if (!pval || !*pval)(gdb) n134 aux = it->funcs;(gdb) n135 if (!aux || !(aux->flags & ASN1_AFLG_ENCODING))(gdb)136 return NULL;(gdb)138}(gdb)asn1_enc_restore (len=0x7fffffffdeac, out=0x0, pval=0x7fffffffdf48, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_utl.c:189189 if (!enc || enc->modified)(gdb) p enc$29 = (ASN1_ENCODING *) 0x0(gdb) n190 return 0;(gdb) n198}(gdb) nASN1_item_ex_i2d (pval=0x7fffffffdf48, out=0x0, it=0x7ffff7dbed80 <X509_ALGOR_it>, tag=-1, aclass=0) at tasn_enc.c:199199 if (i < 0)(gdb) n202 if (i > 0)(gdb) n205 seqcontlen = 0;(gdb) n207 if (tag == -1) {(gdb) p tag$30 = -1(gdb) n208 tag = V_ASN1_SEQUENCE;(gdb) p tag$31 = -1(gdb) n210 aclass = (aclass & ~ASN1_TFLG_TAG_CLASS)(gdb) n213 if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))(gdb) p tag$32 = 16(gdb) p aclass$33 = 0(gdb) p/x tag$34 = 0x10(gdb) p asn1_cb$35 = (ASN1_aux_cb *) 0x0(gdb) n216 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {(gdb) n219 seqtt = asn1_do_adb(pval, tt, 1);(gdb) sasn1_do_adb (pval=0x7fffffffdf48, tt=0x7ffff7dc58a0 <X509_ALGOR_seq_tt>, nullerr=1) at tasn_utl.c:227227 if (!(tt->flags & ASN1_TFLG_ADB_MASK))(gdb) n228 return tt;(gdb) n275}(gdb) nASN1_item_ex_i2d (pval=0x7fffffffdf48, out=0x0, it=0x7ffff7dbed80 <X509_ALGOR_it>, tag=16, aclass=0) at tasn_enc.c:220220 if (!seqtt)(gdb) n222 pseqval = asn1_get_field_ptr(pval, seqtt);(gdb) p seqtt$36 = (const ASN1_TEMPLATE *) 0x7ffff7dc58a0 <X509_ALGOR_seq_tt>(gdb) n224 seqcontlen += asn1_template_ex_i2d(pseqval, NULL, seqtt,(gdb) sasn1_template_ex_i2d (pval=0x603010, out=0x0, tt=0x7ffff7dc58a0 <X509_ALGOR_seq_tt>, tag=-1, iclass=0) at tasn_enc.c:266266 flags = tt->flags;(gdb) n274 if (flags & ASN1_TFLG_TAG_MASK) {(gdb) n282 } else if (tag != -1) {(gdb)287 ttag = -1;(gdb)288 tclass = 0;(gdb)293 iclass &= ~ASN1_TFLG_TAG_CLASS;(gdb)301 if ((flags & ASN1_TFLG_NDEF) && (iclass & ASN1_TFLG_NDEF))(gdb)304 ndef = 1;(gdb)306 if (flags & ASN1_TFLG_SK_MASK) {(gdb)375 if (flags & ASN1_TFLG_EXPTAG) {(gdb)394 return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item),(gdb) sASN1_item_ex_i2d (pval=0x603010, out=0x0, it=0x7ffff7dbf740 <ASN1_OBJECT_it>, tag=-1, aclass=0) at tasn_enc.c:129129 const ASN1_TEMPLATE *tt = NULL;(gdb) n130 unsigned char *p = NULL;(gdb)131 int i, seqcontlen, seqlen, ndef = 1;(gdb)134 const ASN1_AUX *aux = it->funcs;(gdb)135 ASN1_aux_cb *asn1_cb = 0;(gdb)137 if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)(gdb)140 if (aux && aux->asn1_cb)(gdb)143 switch (it->itype) {(gdb)146 if (it->templates)(gdb)149 return asn1_i2d_ex_primitive(pval, out, it, tag, aclass);(gdb)254}(gdb)asn1_template_ex_i2d (pval=0x603010, out=0x0, tt=0x7ffff7dc58a0 <X509_ALGOR_seq_tt>, tag=-1, iclass=0) at tasn_enc.c:397397}(gdb)ASN1_item_ex_i2d (pval=0x7fffffffdf48, out=0x0, it=0x7ffff7dbed80 <X509_ALGOR_it>, tag=16, aclass=0) at tasn_enc.c:216216 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {(gdb)219 seqtt = asn1_do_adb(pval, tt, 1);(gdb)220 if (!seqtt)(gdb)222 pseqval = asn1_get_field_ptr(pval, seqtt);(gdb)224 seqcontlen += asn1_template_ex_i2d(pseqval, NULL, seqtt,(gdb)216 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {(gdb)228 seqlen = ASN1_object_size(ndef, seqcontlen, tag);(gdb)229 if (!out)(gdb)230 return seqlen;(gdb)254}(gdb) p seqlen$37 = 23(gdb) nasn1_item_flags_i2d (val=0x603010, out=0x0, it=0x7ffff7dbed80 <X509_ALGOR_it>, flags=0) at tasn_enc.c:119119}(gdb)ASN1_item_i2d (val=0x603010, out=0x0, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_enc.c:9191}(gdb)main () at openssl_x_algor_test.c:1919 p=buf=malloc(len);(gdb) n20 len=i2d_X509_ALGOR(alg,(unsigned char **)&p);(gdb) n22 fp=fopen("alg.cer","wb");(gdb) p p$38 = 0x6030a7 ""(gdb) p buf$39 = 0x603090 "0\025\006\t`\206H\001e\003\004\002\001\004\b12345678"(gdb) x/23b buf0x603090:0x300x150x060x090x600x860x480x010x603098:0x650x030x040x020x010x040x080x310x6030a0:0x320x330x340x350x360x370x38(gdb) n23 fwrite(buf,1,len,fp);(gdb) n24 fclose(fp);(gdb) n26 fp=fopen("alg.cer","rb");(gdb) n27 len=fread(read,1,1024,fp);(gdb) n28 fclose(fp);(gdb) p len$40 = 23(gdb) p read$41 = "0\025\006\t`\206H\001e\003\004\002\001\004\b12345678\000\257O\336\367\377\177\000\000\000\000\000\000\000\000\000\000\030\237\376\367\377\177\000\000\000\220\376\367\377\177\000\000t\267\335\367\377\177\000\000\bMZ\367\377\177\000\000 \264\335\367\377\177\000\000\000\000\000\000\001\000\000\000\236\b\000\000\001\000\000\000\003\000\000\000\000\000\000\000`\342\377\377\377\177\000\000\240\341\377\377\377\177\000\000\001\000\000\000\000\000\000\000\030\237\376\367\377\177\000\000`\345\377\367\377\177\000\000\230\331\377\367\377\177\000\000\257O\336\367\377\177\000\000\000\000\000\000\000\000\000\000\030\237\376\367\377\177\000\000\001\000\000\000\377\177\000\000\000\000\000\000\000\000\000\000\001\000\000\000\377\177\000\000"...(gdb) x/23b read0x7fffffffdfe0:0x300x150x060x090x600x860x480x010x7fffffffdfe8:0x650x030x040x020x010x040x080x310x7fffffffdff0:0x320x330x340x350x360x370x38(gdb) n29 p=read;(gdb) n31 d2i_X509_ALGOR(&alg2,(const unsigned char **)&p,len);(gdb) n32 if(alg2==NULL)(gdb) p *alg2$42 = {algorithm = 0x6030d0, parameter = 0x603120}(gdb) n37 alg3=X509_ALGOR_dup(alg);(gdb) p *alg->algorithm$43 = {sn = 0x7ffff7b3263f "SHA256", ln = 0x7ffff7b32646 "sha256", nid = 672, length = 9,data = 0x7ffff7b2e7dc <lvalues+4540> "`\206H\001e\003\004\002\001`\206H\001e\003\004\002\002`\206H\001e\003\004\002\003`\206H\001e\003\004\002\004++\201\004g+g+\001*\206H\316=\001\002\003*\206H\316=\001\002\003\001*\206H\316=\001\002\003\002*\206H\316=\001\002\003\003*\206H\316=\003", flags = 0}(gdb) p *alg->parameter$44 = {type = 4, value = {ptr = 0x603050 "\b", boolean = 6303824, asn1_string = 0x603050, object = 0x603050, integer = 0x603050, enumerated = 0x603050, bit_string = 0x603050,octet_string = 0x603050, printablestring = 0x603050, t61string = 0x603050, ia5string = 0x603050, generalstring = 0x603050, bmpstring = 0x603050, universalstring = 0x603050,utctime = 0x603050, generalizedtime = 0x603050, visiblestring = 0x603050, utf8string = 0x603050, set = 0x603050, sequence = 0x603050, asn1_value = 0x603050}}(gdb) n39 X509_ALGOR_free(alg);(gdb) p alg3$45 = (X509_ALGOR *) 0x6031a0(gdb) p *alg3$46 = {algorithm = 0x6031c0, parameter = 0x603210}(gdb) p *alg3->algorithm$47 = {sn = 0x0, ln = 0x0, nid = 0, length = 9, data = 0x6031f0 "`\206H\001e\003\004\002\001", flags = 9}(gdb) p *alg3->parameter$48 = {type = 4, value = {ptr = 0x603230 "\b", boolean = 6304304, asn1_string = 0x603230, object = 0x603230, integer = 0x603230, enumerated = 0x603230, bit_string = 0x603230,octet_string = 0x603230, printablestring = 0x603230, t61string = 0x603230, ia5string = 0x603230, generalstring = 0x603230, bmpstring = 0x603230, universalstring = 0x603230,utctime = 0x603230, generalizedtime = 0x603230, visiblestring = 0x603230, utf8string = 0x603230, set = 0x603230, sequence = 0x603230, asn1_value = 0x603230}}(gdb) n40 if(alg2)(gdb) n41 X509_ALGOR_free(alg2);(gdb) sX509_ALGOR_free (a=0x6030b0) at x_algor.c:7474IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR)(gdb) sASN1_item_free (val=0x6030b0, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_fre.c:7272 asn1_item_combine_free(&val, it, 0);(gdb) sasn1_item_combine_free (pval=0x7fffffffdf98, it=0x7ffff7dbed80 <X509_ALGOR_it>, combine=0) at tasn_fre.c:8383 const ASN1_TEMPLATE *tt = NULL, *seqtt;(gdb) n86 const ASN1_AUX *aux = it->funcs;(gdb) n89 if (!pval)(gdb)91 if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)(gdb)93 if (aux && aux->asn1_cb)(gdb)96 asn1_cb = 0;(gdb)98 switch (it->itype) {(gdb)146 if (asn1_do_lock(pval, -1, it) > 0)(gdb)148 if (asn1_cb) {(gdb)153 asn1_enc_free(pval, it);(gdb) sasn1_enc_free (pval=0x7fffffffdf98, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_utl.c:154154 enc = asn1_get_enc_ptr(pval, it);(gdb) n155 if (enc) {(gdb)162}(gdb)asn1_item_combine_free (pval=0x7fffffffdf98, it=0x7ffff7dbed80 <X509_ALGOR_it>, combine=0) at tasn_fre.c:159159 tt = it->templates + it->tcount - 1;(gdb)160 for (i = 0; i < it->tcount; tt--, i++) {(gdb)162 seqtt = asn1_do_adb(pval, tt, 0);(gdb)163 if (!seqtt)(gdb)165 pseqval = asn1_get_field_ptr(pval, seqtt);(gdb)166 ASN1_template_free(pseqval, seqtt);(gdb)160 for (i = 0; i < it->tcount; tt--, i++) {(gdb)162 seqtt = asn1_do_adb(pval, tt, 0);(gdb)163 if (!seqtt)(gdb)165 pseqval = asn1_get_field_ptr(pval, seqtt);(gdb)166 ASN1_template_free(pseqval, seqtt);(gdb) sASN1_template_free (pval=0x6030b0, tt=0x7ffff7dc58a0 <X509_ALGOR_seq_tt>) at tasn_fre.c:181181 if (tt->flags & ASN1_TFLG_SK_MASK) {(gdb) n192 tt->flags & ASN1_TFLG_COMBINE);(gdb)191 asn1_item_combine_free(pval, ASN1_ITEM_ptr(tt->item),(gdb) sasn1_item_combine_free (pval=0x6030b0, it=0x7ffff7dbf740 <ASN1_OBJECT_it>, combine=0) at tasn_fre.c:8383 const ASN1_TEMPLATE *tt = NULL, *seqtt;(gdb) n86 const ASN1_AUX *aux = it->funcs;(gdb)89 if (!pval)(gdb)91 if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)(gdb)93 if (aux && aux->asn1_cb)(gdb)96 asn1_cb = 0;(gdb)98 switch (it->itype) {(gdb)101 if (it->templates)(gdb)104 ASN1_primitive_free(pval, it);(gdb)105 break;(gdb)176}(gdb)ASN1_template_free (pval=0x6030b0, tt=0x7ffff7dc58a0 <X509_ALGOR_seq_tt>) at tasn_fre.c:193193}(gdb) nasn1_item_combine_free (pval=0x7fffffffdf98, it=0x7ffff7dbed80 <X509_ALGOR_it>, combine=0) at tasn_fre.c:160160 for (i = 0; i < it->tcount; tt--, i++) {(gdb)168 if (asn1_cb)(gdb)170 if (!combine) {(gdb)171 OPENSSL_free(*pval);(gdb)172 *pval = NULL;(gdb)174 break;(gdb)176}(gdb)ASN1_item_free (val=0x0, it=0x7ffff7dbed80 <X509_ALGOR_it>) at tasn_fre.c:7373}(gdb)main () at openssl_x_algor_test.c:4242 X509_ALGOR_free(alg3);(gdb)43 free(buf);(gdb) n44 return 0;(gdb)45}(gdb)
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