jansson | C library for encoding , decoding and manipulating JSON data | JSON Processing library

by akheron C Version: v2.14 License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | jansson Summary

jansson is a C library typically used in Utilities, JSON Processing applications. jansson has no bugs, it has a Permissive License and it has medium support. However jansson has 1 vulnerabilities. You can download it from GitHub.

C library for encoding, decoding and manipulating JSON data

Support

Quality

Security

License

Reuse

Support

jansson has a medium active ecosystem.

It has 2802 star(s) with 783 fork(s). There are 128 watchers for this library.

It had no major release in the last 12 months.

There are 66 open issues and 311 have been closed. On average issues are closed in 141 days. There are 29 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of jansson is v2.14

Quality

jansson has 0 bugs and 0 code smells.

Security

jansson has 1 vulnerability issues reported (0 critical, 1 high, 0 medium, 0 low).

jansson code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

jansson is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

jansson releases are available to install and integrate.

It has 111 lines of code, 10 functions and 4 files.

It has high code complexity. Code complexity directly impacts maintainability of the code.

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jansson Key Features

No Key Features are available at this moment for jansson.

jansson Examples and Code Snippets

No Code Snippets are available at this moment for jansson.

Community Discussions

Trending Discussions on jansson

how to assign a string to a fixed sized char array

How to install mod_auth_openidc on RHEL 7

error LNK2019: unresolved external symbol referenced when compile HTTPD

How to make table scroll when using flex?

Brew Install Httpd: Welcome to Nginx?

How to decode json data from google api

C : How to optimise the memory consumption of the given c program?

Compiling NSS module in Docker Alpine - fatal error: nss.h: No such file or directory

C - How to resolve a segmentation fault while freeing the pointer after the function call?

C : jansson json_decref - segmentation fault

QUESTION

how to assign a string to a fixed sized char array

Asked 2022-Feb-17 at 00:29

I am reading a string from a json object. The string can be compressed or uncompressed. If it's compressed, I have to decompress it. So depending on the compressed condition I want to assign a value to with json_string_value. I know the size of the string, hence I want the string to have a static size.

I have the following:

...

ANSWER

Answered 2022-Feb-16 at 23:33

You don't need all the extra variables, you can just call the function in strcpy() arguments.

Source https://stackoverflow.com/questions/71150591

QUESTION

How to install mod_auth_openidc on RHEL 7

Asked 2021-Aug-11 at 15:57

I've been to the Releases site for mod_auth_openidc and brought down the rpm. And attempting to install requires cjose but attempting to find and install that poses a problem as it seems to incorrectly test the version of jansson (e.g., 2.10 is though to be less than 2.3). Most of the documentation I find is years old. Trying to use yum brings in a very outdated version of the mod_auth_openidc (1.8.8) that fails to allow apache httpd to load if you have an OIDCDirectURL coded.

I'm trying to configure Apache HTTPD to call out to an OAUTH2 Server I've created but I can't get the old mod to work and I'd love to know where I can get the piece parts to allow the latest version to install. There are some old downloads on the Releases site if you page back to 2.0 but the libcjose0 is not an rpm.

Do I need to retrieve the dependencies from their github and build them? If someone has done this already and posted the assets I'm happy to retrieve them. I'm surprised RHEL 7 repos don't have the latest (or newer) versions of the mod_auth_openidc.

...

ANSWER

Answered 2021-Aug-11 at 15:57

The version issue reported when trying to install cjose is a red herring. Based on this site I found I needed to install jansson-devel to get past the errant warning about versions.

Going here allowed me to retrieve a fairly recent version of cjose-0.5.1-1.el7.centos.x86_64.rpm which installed without complaints once jansson-devel was installed.

I was then able to install mod_auth_openidc-2.4.9-1.el7.x86_64.rpm from the github repo releases

I am now able to start apache httpd with the OIDCRedirectURI entry in httpd.conf

Source https://stackoverflow.com/questions/68742362

QUESTION

error LNK2019: unresolved external symbol referenced when compile HTTPD

Asked 2021-Jun-13 at 19:58

I'm compiling HTTPD 2.4.48 along with Lua, Zlib, cURL, jansson and OpenSSL.

Here is the list of files and software I use:

httpd-2.4.48
apr-1.7.0
apr-util-1.6.1
cURL 7.77.0
expat-2.4.1
jansson 2.13.1
Lua 5.4.3
mod_fcgid 2.3.9
openssl-1.1.1k
pcre-8.44
ZLIB 1.2.11
ActivePerl v5.28.1.2801 (x64)
CMake v3.20.3 (x64)
NASM v2.15.05 (x64)
Gawk v3.1.6-1 (x86)

The whole compile statement I use:

Visual Studio 2015: call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" amd64

...

ANSWER

Answered 2021-Jun-13 at 19:58

Whenever you fix issues, start by the first one (cause solving that may remove the remaining), which in you case seems to be:

Source https://stackoverflow.com/questions/67944929

QUESTION

How to make table scroll when using flex?

Asked 2021-Apr-20 at 11:19

I try to create a layout where I have a table in my main view. It might happen that the table is wider than the actual main view, in that case I want to scroll the main view but not the sidebar.

Now the table overflows and I scroll the whole window, which isn't that pretty.

This codepen shows my problem: https://codepen.io/tomas-jansson/pen/ExZdyMx

...

ANSWER

Answered 2021-Apr-20 at 11:10

It is possible to add overflow-auto class to content to have scroll in the content area:

Source https://stackoverflow.com/questions/67176757

QUESTION

Brew Install Httpd: Welcome to Nginx?

Asked 2020-Nov-06 at 13:31

I'm trying to install the brew package httpd (apache). I'm so confused. Every time I do and navigate to http://localhost:8080 I get a big welcome screen that says "Welcome to Nginx." I don't understand.

Am I running nginx and not apache? How could that be?

I'm on macOS 10.15.6.

I'm running pretty basic commands...

...

ANSWER

Answered 2020-Sep-21 at 15:46

I think I narrowed it down to "groonga." First I'm hearing of it, but apparently it's a mariadb brew dependency. I found where the "welcome to nginx" text was coming from.

Source https://stackoverflow.com/questions/63964589

QUESTION

How to decode json data from google api

Asked 2020-Sep-20 at 07:38

I'm using below code in my program to get the latitude and longitude.

...

ANSWER

Answered 2020-Sep-20 at 07:38

First you need to find the start of the payload. This is after an empty line was found.

Then you need to parse the string via json_loads and you receive a root JSON object. The data you are looking for is stored in an embedded object "location" which you can retrieve via json_object_get. Then you can parse the content. This can be done in 2 ways:

You can use a format string to parse members of that object or
You can get the child objects of the location object and retrieve the value of each.

After your work is done you need to decrement the reference counter to allow freeing of the objects.

Source https://stackoverflow.com/questions/63754099

QUESTION

C : How to optimise the memory consumption of the given c program?

Asked 2020-Jun-29 at 07:28

I have a c program which sends the data on every even index over MQTT and once the data is sent, the framed json is cleared and start constructing the new one and the process repeats.

...

ANSWER

Answered 2020-Jun-28 at 17:35

The documentation for json_dumps states

The return value must be freed by the caller using free().

Since you never call free(jsonString); you are causing a memory leak, which would explain your memory issues (since you call json_dumps in a loop)

Source https://stackoverflow.com/questions/62625924

QUESTION

Compiling NSS module in Docker Alpine - fatal error: nss.h: No such file or directory

Asked 2020-Jun-22 at 18:21

I built a SSH bastion image which allows customers to plug themselves over reverse SSH (both of them has an assigned port thanks to permitopen clause on authorized keys). I achieved this through a generic account which handles all public keys. Those keys are dynamically retrieved through a BASH script which pulls them from a HTTP server (AuthorizedKeysCommand SSHD option).

My issue comes from the bastion's userbase which I would like being dynamic too (instead of having a generic user). To do that, I need a HTTP NSS module which does not exist as a native package, so I have to build it myself.

As a beginning, I found this project https://github.com/gmjosack/nss_http

Before updating the source code according to my needs, I'm trying to compile it in a sandbox image but I'm facing this compilation error

...

ANSWER

Answered 2020-Jun-22 at 18:21

You should be good installing the musl-nscd-dev package:

Source https://stackoverflow.com/questions/62510643

QUESTION

C - How to resolve a segmentation fault while freeing the pointer after the function call?

Asked 2020-Jun-21 at 15:52

Below is the code which I have been using to send data through MQTT on every even index while iterating for loop,

...

ANSWER

Answered 2020-Jun-21 at 03:45

I believe you're not mallocing enough memory for key in the middle of main. You malloc two bytes, but then you snprintf a number that could be as large as 4 bytes (when n is 9 and myNum is 100). In fact, even snprintfing a two-digit number overflows the allocation for key, since there is a trailing \0 appended.

Note that passing sizeof(key) to snprintf does not protect you -- key is a char *, which is probably 4 or 8 bytes, even though only 2 bytes are available to use at *key.

Fix by doing char *key= (char *)malloc( 8 );

Source https://stackoverflow.com/questions/62486756

QUESTION

C : jansson json_decref - segmentation fault

Asked 2020-Jun-18 at 10:20

I have a for loop and while iterating the loop, if the index is even index the json object has to be freed and again a new object has to be constructed and again the process has to be repeated.

For the same, using the below script,

...

ANSWER

Answered 2020-Jun-18 at 10:20

You have some memory issues:

Source https://stackoverflow.com/questions/62447591

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

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Install jansson

You can download it from GitHub.

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