[CIFuzz] Check crash on most recent OSS-Fuzz build (#3385)

Adds functionality to check if a crash exists in the most recent OSS-Fuzz build. This is necessary to determine if a crash was introduced in the current pull request or existed in the project already.  Crashes that are surfaced to the user will be both reproducible and novel to the OSS-Fuzz project. 

4 files changed, 12 insertions, 6 deletions

diff --git a/infra/cifuzz/actions/build_fuzzers/action.yml b/infra/cifuzz/actions/build_fuzzers/action.yml
index cea4c9f4..e9fb31ea 100644
--- a/infra/cifuzz/actions/build_fuzzers/action.yml
+++ b/infra/cifuzz/actions/build_fuzzers/action.yml
@@ -2,7 +2,7 @@
 name: 'build-fuzzers'
 description: "Builds an OSS-Fuzz project's fuzzers."
 inputs:
-  project-name:
+  oss-fuzz-project-name:
     description: 'Name of the corresponding OSS-Fuzz project.'
     required: true
   dry-run:
@@ -12,5 +12,5 @@ runs:
   using: 'docker'
   image: 'Dockerfile'
   env:
-    PROJECT_NAME: ${{ inputs.project-name }}
+    OSS_FUZZ_PROJECT_NAME: ${{ inputs.oss-fuzz-project-name }}
     DRY_RUN: ${{ inputs.dry-run}}
diff --git a/infra/cifuzz/actions/build_fuzzers/build_fuzzers_entrypoint.py b/infra/cifuzz/actions/build_fuzzers/build_fuzzers_entrypoint.py
index 92d795a3..9c0a982b 100644
--- a/infra/cifuzz/actions/build_fuzzers/build_fuzzers_entrypoint.py
+++ b/infra/cifuzz/actions/build_fuzzers/build_fuzzers_entrypoint.py
@@ -37,7 +37,7 @@ def main():
   the directory: ${GITHUB_WORKSPACE}/out
 
   Required environment variables:
-    PROJECT_NAME: The name of OSS-Fuzz project.
+    OSS_FUZZ_PROJECT_NAME: The name of OSS-Fuzz project.
     GITHUB_REPOSITORY: The name of the Github repo that called this script.
     GITHUB_SHA: The commit SHA that triggered this script.
     GITHUB_REF: The pull request reference that triggered this script.
@@ -47,7 +47,7 @@ def main():
   Returns:
     0 on success or 1 on Failure.
   """
-  oss_fuzz_project_name = os.environ.get('PROJECT_NAME')
+  oss_fuzz_project_name = os.environ.get('OSS_FUZZ_PROJECT_NAME')
   github_repo_name = os.path.basename(os.environ.get('GITHUB_REPOSITORY'))
   pr_ref = os.environ.get('GITHUB_REF')
   commit_sha = os.environ.get('GITHUB_SHA')
diff --git a/infra/cifuzz/actions/run_fuzzers/action.yml b/infra/cifuzz/actions/run_fuzzers/action.yml
index c4ce0e49..ca40c4fe 100644
--- a/infra/cifuzz/actions/run_fuzzers/action.yml
+++ b/infra/cifuzz/actions/run_fuzzers/action.yml
@@ -2,6 +2,9 @@
 name: 'run-fuzzers'
 description: 'Runs fuzz target binaries for a specified length of time.'
 inputs:
+  oss-fuzz-project-name:
+    description: 'The OSS-Fuzz project name.'
+    required: true
   fuzz-seconds:
     description: 'The total time allotted for fuzzing in seconds.'
     required: true
@@ -13,5 +16,6 @@ runs:
   using: 'docker'
   image: 'Dockerfile'
   env:
+    OSS_FUZZ_PROJECT_NAME: ${{ inputs.oss-fuzz-project-name }}
     FUZZ_SECONDS: ${{ inputs.fuzz-seconds }}
     DRY_RUN: ${{ inputs.dry-run}}
diff --git a/infra/cifuzz/actions/run_fuzzers/run_fuzzers_entrypoint.py b/infra/cifuzz/actions/run_fuzzers/run_fuzzers_entrypoint.py
index 70a32f30..5aa83e5a 100644
--- a/infra/cifuzz/actions/run_fuzzers/run_fuzzers_entrypoint.py
+++ b/infra/cifuzz/actions/run_fuzzers/run_fuzzers_entrypoint.py
@@ -46,13 +46,14 @@ def main():
     FUZZ_SECONDS: The length of time in seconds that fuzzers are to be run.
     GITHUB_WORKSPACE: The shared volume directory where input artifacts are.
     DRY_RUN: If true, no failures will surface.
+    OSS_FUZZ_PROJECT_NAME: The name of the relevant OSS-Fuzz project.
 
   Returns:
     0 on success or 1 on Failure.
   """
   fuzz_seconds = int(os.environ.get('FUZZ_SECONDS', 600))
   workspace = os.environ.get('GITHUB_WORKSPACE')
-
+  oss_fuzz_project_name = os.environ.get('OSS_FUZZ_PROJECT_NAME')
   # Check if failures should not be reported.
   dry_run = (os.environ.get('DRY_RUN').lower() == 'true')
 
@@ -73,7 +74,8 @@ def main():
     logging.error('This script needs to be run in the Github action context.')
     return error_code
   # Run the specified project's fuzzers from the build.
-  run_status, bug_found = cifuzz.run_fuzzers(fuzz_seconds, workspace)
+  run_status, bug_found = cifuzz.run_fuzzers(fuzz_seconds, workspace,
+                                             oss_fuzz_project_name)
   if not run_status:
     logging.error('Error occured while running in workspace %s.', workspace)
     return error_code