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* Fixed: mandatory leaf in a uses statement caused abort

Browse source 
* Occurence was in ietf-yang-patch.yang
This commit is contained in:
Olof hagsand 2021-07-19 08:14:10 +02:00
parent 270c47b396
commit 6bb6faadc9
4 changed files with 64 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

2
CHANGELOG.md
View file

@ -42,6 +42,8 @@ Developers may need to change their code
### Corrected Bugs
* Fixed: mandatory leaf in a uses statement caused abort
* Occurence was in ietf-yang-patch.yang
* Native RESTCONF fixes for http/1 or http/2 only modes
* Memleak in http/1-only
* Exit if http/1 request sent to http/2-only (bad client magic)

1
lib/clixon/clixon_yang.h
View file

@ -198,6 +198,7 @@ char *yang_argument_get(yang_stmt *ys);
int yang_argument_set(yang_stmt *ys, char *arg);
cg_var *yang_cv_get(yang_stmt *ys);
int yang_cv_set(yang_stmt *ys, cg_var *cv);
cvec *yang_cvec_get(yang_stmt *ys);
int yang_cvec_set(yang_stmt *ys, cvec *cvv);
uint16_t yang_flag_get(yang_stmt *ys, uint16_t flag);

48
lib/src/clixon_yang.c
View file

@ -256,6 +256,18 @@ yang_cv_get(yang_stmt *ys)
return ys->ys_cv;
}
/*! Set yang statement CLIgen variable
* @param[in] ys Yang statement node
* @param[in] cv cligen variable
*/
int
yang_cv_set(yang_stmt *ys,
cg_var *cv)
{
ys->ys_cv = cv;
return 0;
}
/*! Get yang statement CLIgen variable vector
* @param[in] ys Yang statement node
*/
@ -456,13 +468,14 @@ int
ys_free1(yang_stmt *ys,
int self)
{
cg_var *cv;
if (ys->ys_argument){
free(ys->ys_argument);
ys->ys_argument = NULL;
}
if (ys->ys_cv){
cv_free(ys->ys_cv);
ys->ys_cv = NULL;
if ((cv = yang_cv_get(ys)) != NULL){
cv_free(cv);
yang_cv_set(ys, NULL);
}
if (ys->ys_cvec){
cvec_free(ys->ys_cvec);
@ -601,6 +614,8 @@ ys_cp(yang_stmt *ynew,
int i;
yang_stmt *ycn; /* new child */
yang_stmt *yco; /* old child */
cg_var *cvn;
cg_var *cvo;
memcpy(ynew, yold, sizeof(*yold));
ynew->ys_parent = NULL;
@ -614,11 +629,13 @@ ys_cp(yang_stmt *ynew,
clicon_err(OE_YANG, errno, "strdup");
goto done;
}
if (yold->ys_cv)
if ((ynew->ys_cv = cv_dup(yold->ys_cv)) == NULL){
if ((cvo = yang_cv_get(yold)) != NULL){
if ((cvn = cv_dup(cvo)) == NULL){
clicon_err(OE_YANG, errno, "cv_dup");
goto done;
}
yang_cv_set(ynew, cvn);
}
if (yold->ys_cvec)
if ((ynew->ys_cvec = cvec_dup(yold->ys_cvec)) == NULL){
clicon_err(OE_YANG, errno, "cvec_dup");
@ -1770,8 +1787,7 @@ ys_populate_leaf(clicon_handle h,
yparent = ys->ys_parent; /* Find parent: list/container */
/* 1. Find type specification and set cv type accordingly */
if (yang_type_get(ys, &origtype, &yrestype, &options, NULL, NULL, NULL, &fraction_digits)
< 0)
if (yang_type_get(ys, &origtype, &yrestype, &options, NULL, NULL, NULL, &fraction_digits) < 0)
goto done;
restype = yrestype?yrestype->ys_argument:NULL;
if (clicon_type2cv(origtype, restype, ys, &cvtype) < 0) /* This handles non-resolved also */
@ -1828,7 +1844,7 @@ ys_populate_leaf(clicon_handle h,
if ((ret = yang_key_match(yparent, ys->ys_argument)) < 0)
goto done;
}
ys->ys_cv = cv;
yang_cv_set(ys, cv);
retval = 0;
done:
if (origtype)
@ -2241,7 +2257,7 @@ ys_populate_feature(clicon_handle h,
cv_bool_set(cv, found);
if (found)
clicon_debug(1, "%s %s:%s", __FUNCTION__, module, feature);
ys->ys_cv = cv;
yang_cv_set(ys, cv);
ok:
retval = 0;
done:
@ -2495,7 +2511,7 @@ yang_if_feature(clicon_handle h,
yang_stmt *yfeat; /* feature yang node */
int opand = -1; /* -1:not set, 0:or, 1:and */
int enabled = 0;
cg_var *cv;
if ((vec = clicon_strsep(ys->ys_argument, " \t\r\n", &nvec)) == NULL)
goto done;
/* Two steps: first detect operators
@ -2584,7 +2600,8 @@ yang_if_feature(clicon_handle h,
/* Check if this feature is enabled or not
* Continue loop to catch unbound features and make verdict at end
*/
if (yfeat->ys_cv == NULL || !cv_bool_get(yfeat->ys_cv)){ /* disabled */
cv = yang_cv_get(yfeat);
if (cv == NULL || !cv_bool_get(cv)){ /* disabled */
/* if AND then this is permanently disabled */
if (opand && enabled)
enabled = 0;
@ -3024,14 +3041,15 @@ int
yang_mandatory(yang_stmt *ys)
{
yang_stmt *ym;
cg_var *cv;
/* 1) A leaf, choice, anydata, or anyxml node with a "mandatory"
* statement with the value "true". */
if (ys->ys_keyword == Y_LEAF || ys->ys_keyword == Y_CHOICE ||
ys->ys_keyword == Y_ANYDATA || ys->ys_keyword == Y_ANYXML){
if ((ym = yang_find(ys, Y_MANDATORY, NULL)) != NULL){
if (ym->ys_cv != NULL) /* shouldnt happen */
return cv_bool_get(ym->ys_cv);
if ((cv = yang_cv_get(ym)) != NULL) /* shouldnt happen */
return cv_bool_get(cv);
}
}
#if 0 /* See note above */
@ -3071,9 +3089,9 @@ yang_config(yang_stmt *ys)
yang_stmt *ym;
if ((ym = yang_find(ys, Y_CONFIG, NULL)) != NULL){
if (ym->ys_cv == NULL) /* shouldnt happen */
if (yang_cv_get(ym) == NULL) /* shouldnt happen */
return 1;
return cv_bool_get(ym->ys_cv);
return cv_bool_get(yang_cv_get(ym));
}
return 1;
}

44
lib/src/clixon_yang_parse_lib.c
View file

@ -1767,29 +1767,33 @@ cg_var *
ys_parse(yang_stmt *ys,
enum cv_type cvtype)
{
int cvret;
char *reason = NULL;
int cvret;
char *reason = NULL;
cg_var *cv = NULL;
assert(yang_cv_get(ys) == NULL); /* Cv:s are parsed in different places, difficult to separate */
if ((ys->ys_cv = cv_new(cvtype)) == NULL){
if ((cv = yang_cv_get(ys)) != NULL){
/* eg mandatory in uses is already set and then copied */
cv_free(cv);
yang_cv_set(ys, NULL);
}
if ((cv = cv_new(cvtype)) == NULL){
clicon_err(OE_YANG, errno, "cv_new");
goto done;
}
if ((cvret = cv_parse1(yang_argument_get(ys), ys->ys_cv, &reason)) < 0){ /* error */
if ((cvret = cv_parse1(yang_argument_get(ys), cv, &reason)) < 0){ /* error */
clicon_err(OE_YANG, errno, "parsing cv");
ys->ys_cv = NULL;
goto done;
}
if (cvret == 0){ /* parsing failed */
clicon_err(OE_YANG, errno, "Parsing CV: %s", reason);
ys->ys_cv = NULL;
goto done;
}
yang_cv_set(ys, cv);
/* cvret == 1 means parsing is OK */
done:
if (reason)
free(reason);
return ys->ys_cv;
return yang_cv_get(ys);
}
/*! First round yang syntactic statement specific checks. No context checks.
@ -1819,6 +1823,7 @@ ys_parse_sub(yang_stmt *ys,
char *reason = NULL;
int ret;
uint32_t minmax;
cg_var *cv = NULL;
arg = yang_argument_get(ys);
keyword = yang_keyword_get(ys);
@ -1826,7 +1831,11 @@ ys_parse_sub(yang_stmt *ys,
case Y_FRACTION_DIGITS:
if (ys_parse(ys, CGV_UINT8) == NULL)
goto done;
fd = cv_uint8_get(ys->ys_cv);
if ((cv = yang_cv_get(ys)) == NULL){
clicon_err(OE_YANG, ENOENT, "Unexpected NULL cv");
goto done;
}
fd = cv_uint8_get(cv);
if (fd < 1 || fd > 18){
clicon_err(OE_YANG, errno, "%u: Out of range, should be [1:18]", fd);
goto done;
@ -1841,11 +1850,12 @@ ys_parse_sub(yang_stmt *ys,
case Y_REVISION_DATE: /* YYYY-MM-DD encoded as uint32 YYYYMMDD */
if (ys_parse_date_arg(arg, &date) < 0)
goto done;
if ((ys->ys_cv = cv_new(CGV_UINT32)) == NULL){
if ((cv = cv_new(CGV_UINT32)) == NULL){
clicon_err(OE_YANG, errno, "cv_new");
goto done;
}
cv_uint32_set(ys->ys_cv, date);
yang_cv_set(ys, cv);
cv_uint32_set(cv, date);
break;
case Y_STATUS: /* RFC7950 7.21.2: "current", "deprecated", or "obsolete". */
if (strcmp(arg, "current") &&
@ -1858,13 +1868,14 @@ ys_parse_sub(yang_stmt *ys,
break;
case Y_MAX_ELEMENTS:
case Y_MIN_ELEMENTS:
if ((ys->ys_cv = cv_new(CGV_UINT32)) == NULL){
if ((cv = cv_new(CGV_UINT32)) == NULL){
clicon_err(OE_YANG, errno, "cv_new");
goto done;
}
yang_cv_set(ys, cv);
if (keyword == Y_MAX_ELEMENTS &&
strcmp(arg, "unbounded") == 0)
cv_uint32_set(ys->ys_cv, 0); /* 0 means unbounded for max */
cv_uint32_set(cv, 0); /* 0 means unbounded for max */
else{
if ((ret = parse_uint32(arg, &minmax, &reason)) < 0){
clicon_err(OE_YANG, errno, "parse_uint32");
@ -1876,7 +1887,7 @@ ys_parse_sub(yang_stmt *ys,
free(reason);
goto done;
}
cv_uint32_set(ys->ys_cv, minmax);
cv_uint32_set(cv, minmax);
}
break;
case Y_MODIFIER:
@ -1888,11 +1899,12 @@ ys_parse_sub(yang_stmt *ys,
case Y_UNKNOWN:{ /* save (optional) argument in ys_cv */
if (extra == NULL)
break;
if ((ys->ys_cv = cv_new(CGV_STRING)) == NULL){
if ((cv = cv_new(CGV_STRING)) == NULL){
clicon_err(OE_YANG, errno, "cv_new");
goto done;
}
if ((ret = cv_parse1(extra, ys->ys_cv, &reason)) < 0){ /* error */
yang_cv_set(ys, cv);
if ((ret = cv_parse1(extra, cv, &reason)) < 0){ /* error */
clicon_err(OE_YANG, errno, "parsing cv");
goto done;
}